the probability that exactly 10 out of 10 eighty-year-olds will die in the next year is approximately 0.0000000031795, which is closest to option (e).
The number of deaths in a group of 80-year-olds follows a binomial distribution with parameters n = 10 and p = 0.27. The probability mass function of this distribution is given by:
P(X = k) = (n choose k) * p^k * (1-p)^(n-k)
where X is the random variable denoting the number of deaths, k is the number of deaths, (n choose k) is the binomial coefficient "n choose k" which represents the number of ways to choose k items out of n without order and is given by:
(n choose k) = n! / (k! * (n-k)!)
where ! denotes the factorial operation.
Substituting n = 10 and p = 0.27, we get:
P(X = 10) = (10 choose 10) * 0.27^10 * (1-0.27)^(10-10) = 0.0000000031795
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Ssume the square matrix a satisfies a2 −3a 2i = 0. Show that a i is invertible and find its inverse
The matrix a is given such that a² - 3a - 2I = 0. It is shown that ai is invertible, and its inverse is (1/2)(a_i - 3i).
Given: a² - 3a = 2i
Multiplying both sides by a⁻¹, we get
a - 3i = 2a⁻¹
Rearranging, we get
a⁻¹ = (1/2)(a - 3i)
Now, we need to show that a_i is invertible, i.e., we need to find (a_i)⁻¹.
We know that
(a_i)² - 3(a_i) = a
Multiplying both sides by a_i⁻¹, we get
a_i - 3i = a_i⁻¹ * a
Rearranging, we get
a_i⁻¹ = (1/2)(a_i - 3i)
Therefore, (a_i)⁻¹ exists and is given by (1/2)(a_i - 3i).
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A student randomly draws a card from a standard deck of 52 cards. He records the type of card drawn and places it back in the deck. This is repeated 20 times. The table below shows the frequency of each outcome.
Outcome Frequency
Heart 6
Spade 4
Club 7
Diamond 3
Determine the experimental probability of drawing a heart.
0.15
0.20
0.30
0.60
The experimental probability of drawing a heart is given as follows:
0.30.
How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.
The total number of outcomes is given as follows:
6 + 4 + 7 + 3 = 20.
Out of these 20 trials, 6 resulted in a heart, hence the experimental probability of drawing a heart is given as follows:
p = 6/20
p = 0.3
p = 30%.
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Life on Other Planets Forty-six percent of people believe that there is life on other planets in the universe. A scientist does not agree with this finding. He surveyed 120 randomly selected individuals and found 48 believed that there is life on other planets. At a = 0.10, is there sufficient evidence to conclude that the percentage differs from 48? Source: American Health, Inc.
According to the given information, 46% of people believe that there is life on other planets. A scientist, who disagrees with this finding, conducted a survey of 120 randomly selected individuals and found that 48 of them believed in life on other planets. To determine if there is sufficient evidence to conclude that the percentage differs from 48 at a significance level (α) of 0.10, a hypothesis test is needed.
The null hypothesis (H0) states that the percentage is equal to 48%, while the alternative hypothesis (H1) states that the percentage differs from 48%. In this case, the sample proportion (p) is 48/120 = 0.4, and the hypothesized proportion (p0) is 0.48.
To perform the hypothesis test, we need to calculate the test statistic (z) and compare it to the critical values. The test statistic can be calculated using the formula z = (p - p0) / √(p0 * (1 - p0) / n), where n is the sample size. After calculating the test statistic, we compare it to the critical values corresponding to α = 0.10.
If the test statistic falls within the critical region, we reject the null hypothesis and conclude that there is sufficient evidence to claim that the percentage differs from 48%. If it falls outside the critical region, we fail to reject the null hypothesis and cannot conclude that the percentage differs from 48% based on this sample.
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You measure 22 backpacks' weights, and find they have a mean weight of 39 ounces. Assume the population standard deviation is 14.8 ounces.
Based on this, construct a 90% confidence interval for the true population mean backpack weight.
Give your answers as decimals, to two places
The 90% confidence interval for the true population mean backpack weight is (32.93, 45.07) ounces.
We can use the formula for a confidence interval for the population mean:
CI = [tex]\bar{X}[/tex] ± z*(σ/√n)
where [tex]\bar{X}[/tex] = sample mean
σ = population standard deviation
n = sample size
z = critical value from the standard normal distribution for the desired confidence level (90% in this case)
± represents the interval around the sample mean.
Plugging in the values given, we get:
CI = 39 ± 1.645*(14.8/√22)
Simplifying and computing, we get:
CI = (32.93, 45.07)
So the 90% confidence interval for the true population mean backpack weight is (32.93, 45.07) ounces.
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the following list shows the number of video games sold at a game store each day for one week. 15, 43, 50, 39, 22, 16, 20 which of the following is the best classification of the data in the list? responses categorical and continuous categorical and continuous quantitative and continuous quantitative and continuous categorical and discrete categorical and discrete quantitative and discrete quantitative and discrete neither categorical nor quantitative, and neither discrete nor continuous
The best classification of the data in the list is quantitative and discrete.
Quantitative data refers to information that can be measured and expressed numerically. This type of data can be further classified as either continuous or discrete. Continuous data can take on any value within a certain range, while discrete data can only take on specific values.
Discrete data is a type of quantitative data that can only take on certain values. These values are typically integers or whole numbers, and there are no values in between. For example, the number of children in a family is discrete data, as it can only take on whole number values (1, 2, 3, etc.).
In summary, discrete data is a type of quantitative data that is characterized by its ability to only take on specific values, with no values in between.
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if one side length of a triangle has length a and another has length 2a, show that the largest possible area of the triangle is a^2
So we have shown that the largest possible area of the triangle is [tex]a^2,[/tex]which occurs when the third side has length 3a and the height is a.
We can use the formula for the area of a triangle, which is A = (1/2)bh, where b is the length of the base and h is the height. In this case, we know that the base has length 2a, so we need to find the height.
Let's call the third side of the triangle, which is not given, b. We know that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side, so we have:
a + 2a > b
3a > b
We can rearrange this to solve for b:
b < 3a
Now, let's use the formula for the area of a triangle:
A = (1/2)bh
We want to maximize A, so we want to maximize h. We know that h is the height of the triangle, which is perpendicular to the base, so it forms a right angle. We can use the Pythagorean theorem to find h in terms of a and b:
[tex]h^2 = b^2 - a^2[/tex]
We can substitute our inequality for b:
[tex]h^2 < (3a)^2 - a^2[/tex]
[tex]h^2 < 8a^2[/tex]
h < √(8[tex]a^2[/tex])
h < 2 √(2)a
Now we can use the formula for the area of the triangle again:
A = (1/2)bh
A < (1/2)(2 √(2)a)(a)
A < [tex]a^2[/tex] √(2)
So we have shown that the largest possible area of the triangle is [tex]a^2,[/tex]which occurs when the third side has length 3a and the height is a.
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15) Which example best shows a labor issue related to wages?
Question 15 options:
An employer is accused of failing to pay covered employees at a rate that meets the requirements of national and state laws.
An employee is accused of making repeated, unwanted comments based on an employee's age and religion.
A manager refused to allow a woman who had just given birth the time off required by law.
A company is accused of refusing to hire a highly qualified applicant based on his disability and age.
The "example" which best shows the "labor-issue" related to the wages is (a) Employer is accused of failing to pay "covered-employees" at a rate that meets the requirements of national and state laws.
The "Labor-Issue" involves the payment of wages and compliance with wage laws, which includes minimum wage requirements, overtime pay, and other wage-related regulations.
The Failing to pay the employees at the promised rate that meets the legal requirements can lead to legal and financial consequences for the employer, and may result in a dispute or conflict between the employer and employees.
Therefore, the correct option is (a).
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The given question is incomplete, the complete question is
Which example best shows a labor issue related to wages?
(a) An employer is accused of failing to pay covered employees at a rate that meets the requirements of national and state laws.
(b) An employee is accused of making repeated, unwanted comments based on an employee's age and religion.
(c) A manager refused to allow a woman who had just given birth the time off required by law.
(d) A company is accused of refusing to hire a highly qualified applicant based on his disability and age.
Part A
? Question
Type the correct answer in each box. Write your answers in decimal form, rounded to the
necessary. Type the solution with the smaller value in the first blank.
(Hint: to complete your calculations, you may need to use mental math.)
Select and use the most direct method to solve 2x(x + 1.5) = -1.
X =
Part B
or x =
By solving the given equation 2x(x + 1.5) = -1 the roots of the equation are -0.5 and -1.
Given equation = 2x(x + 1.5) = -1
we can write it as = 2x²+3x=-1
= 2x²+3x+1 = 0
By using the factorization method, we can solve the above equation.
2x²+3x+1 = 0
2 = 1 x 2
2x² + 2x + 1x + 1 = 0
2x(x + 1) + 1(x + 1) = 0
(2x + 1)(x + 1) = 0
(2x + 1) = 0 ; (x + 1) = 0
2x = -1 ; x = -1
x = -1/2
x = -0.5
From the above analysis, the root or zeroes of the given equation is -0.5 and -1.
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What does 15/30 terminate while 16/30 repeated
15/30 is a terminating decimal, meaning it has a finite number of digits after the decimal point.
And, 16/30 is a repeating decimal, meaning the digits after the decimal point repeat continuously.
Since, We get;
⇒ 15/30 can be simplified to,
⇒ 1/2,
which is a terminating decimal, meaning it has a finite number of digits after the decimal point.
On the other hand, 16/30 can be simplified to 8/15, which is a repeating decimal, meaning the digits after the decimal point repeat continuously.
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what is the maximum population growth rate (rmax) if the population grows to 283 in one year? responses
The maximum possible population growth rate is 0 (i.e., no growth) if the population grows to 283 in one year. This means that the population remained stable over the course of the year.
What is the rate?
the rate is a measure of the change in one quantity with respect to another quantity. It is typically expressed as a ratio between the two quantities.
To find the maximum population growth rate (rmax), we need to use the exponential growth formula:
[tex]N_t = N_0 * e^{(rt)}[/tex]
where Nt is the final population size, N0 is the initial population size, r is the growth rate, and t is the time period over which the population grows.
In this case, we know that the population grows from an initial size of N0 to a final size of Nt in one year (t = 1), so we can rewrite the formula as:
[tex]N_t = N_0 * e^r[/tex]
We also know that N0 is not given, but we can assume that it is less than or equal to Nt (since the population grows over time).
Substituting the given values, we get:
283 = [tex]N_0 * e^r[/tex]
To solve for r, we need to isolate it on one side of the equation. We can do this by taking the natural logarithm (ln) of both sides:
ln(283) = ln([tex]N_0 * e^r[/tex])
ln(283) = ln([tex]N_0[/tex]) + ln([tex]e^r[/tex])
ln(283) = ln([tex]N_0[/tex]) + r
Now we can solve for r:
r = ln(283) - ln([tex]N_0[/tex])
Since we don't know the value of N0, we can only find an upper bound for rmax. The largest possible value of N0 is when it is equal to Nt, so we have:
rmax = ln(283) - ln(283) = 0
Therefore, the maximum possible population growth rate is 0 (i.e., no growth) if the population grows to 283 in one year. This means that the population remained stable over the course of the year.
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Consider the the following series. N6 (a) Use the sum of the first 10 terms to estimate the sum of the given series. (Round your answer to six decimal places. ) S10 1. 017342 (b) Use the Remainder Estimate for the Integral Test to estimate the remainder (error) in using the 10th partial sum to approximate the sum of the series. (Round your answer to six decimal places if necessary. ) R10 S (c) Using the Remainder Estimate for the Integral Test, find a value of n that will ensure that the error in the approximation sn is less than 0. 1. N>0 n>18 n>11 n>6 n-18
a) The sum of the given series is 1.098902
By using the 10th partial sum will give us an approximation that is accurate to within 0.000001 if we use n > 11.
To ensure that the error in the approximation sn is less than 0.0000001, we need n > 18. (option b)
(a) To estimate the sum of the series, we can add up the first 10 terms:
1/1⁶ + 1/2⁶ + ... + 1/10⁶ ≈ 1.098902
This is just an approximation of the actual sum, but it gives us a good idea of what the sum might be.
(b) To estimate the remainder or error in using the 10th partial sum to approximate the sum of the series, we can use the Remainder Estimate for the Integral Test. This tells us that the remainder Rn can be bounded by an integral:
Rn < [tex]\int_{0}^{\infty}[/tex] 1/x⁶ dx
We can evaluate this integral using the power rule for integrals:
Rₙ < [-1/5x⁵]
Rₙ < 1/5n⁵
So if we want the error to be less than 0.000001, we need:
1/5n⁵ < 0.000001
n > (5/0.000001)¹/₅
n > 11.6621
(c) Using the same method as in (b), we can find a value of n that will ensure the error in the approximation sⁿ is less than 0.0000001. We need:
1/5n⁵ < 0.0000001
n > (5/0.0000001)¹/₅
n > 18.2872
Hence the correct option is (b).
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A state capital building has a circular floor 94 feet in diameter. The legislature wishes to have the floor carpeted. The lowest bid is $78 per square yard, including installation.
What is the area of the circular floor in square feet? (Round your answer to two decimal places.)
ft2
What is the area of the circular floor in square yards? (Round your answer to two decimal places.)
yd2
How much must the legislature spend (in dollars) for the carpeting project? Round to the nearest dollar.
$
Answer:
The area of the circular floor in square feet is 6,939.78 ft².
The area of the circular floor in square yards is 771.09 yd².
The legislature must spend $60,145 for the carpeting project.
Step-by-step explanation:
The area of a circle is given by the formula A = πr², where r is the radius of the circle. The radius of a circle is half its diameter.
Given the diameter of the state capital building's circular floor is 94 feet, its radius is:
[tex]\implies r=\dfrac{94}{2}=47\sf \;ft[/tex]
To find the area of the circular floor in square feet, substitute r = 47 into the formula for area of a circle:
[tex]\begin{aligned}\implies \sf Area &= \pi(47)^2\\&=2209\pi\\&=6939.78\;\sf ft^2\;(2\;d.p.)\end{aligned}[/tex]
Therefore, the area of the circular floor in square feet is 6,939.78 ft² (rounded to two decimal places).
To convert square feet to square yards, divide the area in square feet by 9. Therefore, the area of the circular floor in square yards is:
[tex]\begin{aligned}\implies \sf Area &= \dfrac{2209\pi}{9}\\&=771.09\; \sf yd^2\;(2\;d.p.)\end{aligned}[/tex]
Therefore, the area of the circular floor in square yards is 771.09 yd² (rounded to two decimal places).
To find the total cost of the project, given the lowest bid for the project is $78 per square yard, multiply the area of the circular floor in square yards by the cost per square yard:
[tex]\begin{aligned}\implies \sf Total\;cost &=771.09 \cdot \$78\\&=\$60145.02\end{aligned}[/tex]
Therefore, the legislature must spend $60,145 for the carpeting project, (rounded to the nearest dollar).
the number of ways to select a set of 17 flowers chosen from 4 possible varieties (zero or more of each variety).
There are 1140 ways to select a set of 17 flowers from 4 possible varieties.
What is the combination?
Combinations are a way to count the number of ways to choose a subset of objects from a larger set, where the order of the objects does not matter.
To solve this problem, we can use the concept of combinations.
The number of ways to choose a set of 17 flowers from 4 varieties is the same as the number of ways to distribute 17 identical objects into 4 distinct boxes (where each box represents a variety).
We can use the stars and bars method to count the number of ways to do this.
We place 17 stars (representing the flowers) in a row and place 3 bars (representing the separators between the boxes) among them.
The number of stars to the left of the first bar represents the number of flowers of the first variety,
the number of stars between the first and second bars represents the number of flowers of the second variety, and so on.
For example, if we have 6 flowers of the first variety, 3 flowers of the second variety,
5 flowers of the third variety, and 3 flowers of the fourth variety, one possible arrangement of stars and bars is:
| * * * | * * * * * | * *
This corresponds to selecting 6 flowers of the first variety, 3 flowers of the second variety, 5 flowers of the third variety, and 3 flowers of the fourth variety.
The total number of ways to arrange 17 stars and 3 bars is:
(17 + 3) choose 3 = 20 choose 3 = 1140
Therefore, there are 1140 ways to select a set of 17 flowers from 4 possible varieties.
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Let f(x)=sqrt(x). If the rate of change of f at x=c is twice the rate of change at x=1, then c=
If the rate of change of f at x=c is twice the rate of change at x=1, then c=4.
What is derivatives?
In calculus, the derivative is a mathematical concept that measures how a function changes as its input changes.
We can start by finding the derivative of f(x) using the power rule:
f'(x) = [tex](1/2)x^{(1/2)}[/tex]
Then, we can find the rate of change of f at x=c by evaluating f'(c). Similarly, we can find the rate of change of f at x=1 by evaluating f'(1). We know from the problem that the rate of change at x=c is twice the rate of change at x=1, so we can write:
f'(c) = 2*f'(1)
Substituting the expressions for f'(c) and f'(1), we get:
[tex](1/2)c^{(-1/2)}[/tex] = 2*(1/2)*[tex](1)^{(-1/2)}[/tex]
Simplifying the right-hand side, we get:
[tex](1/2)c^{(-1/2)}[/tex] = 1
Multiplying both sides by 2 and taking the reciprocal, we get:
[tex]c^{(1/2)}[/tex] = 2
Squaring both sides, we get:
c = 4
Therefore, c = 4.
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x = 7
To isolate x, always do the opposite of the number next to it. x - 5 = 2
The opposite of "- 5" is "+ 5," so we +5 to both sides
x - 5 + 5 = 2 + 5
x = 7
The solution to the equation x - 5 = 2 is x = 7.
What is equation?A statement that affirms the equivalence of two expressions joined by the equals symbol "=" is known as an equation.
Yes, your steps are correct. Here's the solution to the equation:
x - 5 = 2
To isolate x, we add 5 to both sides of the equation:
x - 5 + 5 = 2 + 5
Simplifying both sides of the equation, we get:
x = 7
Therefore, the solution to the equation x - 5 = 2 is x = 7.
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The complete question is:
Solve the equation to isolate the variable x: x - 5 = 2
Some members of a community garden in California want to plant an orchard to earn some extra income. After researching, they decided to plant avocado trees. Avocado saplings (baby trees) cost $20 each. It takes 3 years for avocado trees to reach maturity and bear fruit, but after they do, each tree will produce $125 worth of fruit. The community garden is made of 50 members and their goal is to sell $250 per capita each year.
Calculate the total number of trees that all the garden members will need in total in their orchard to meet the goal.
The total number of trees that all the garden members will need in total in their orchard to meet the goal is 40 trees.
To meet the goal of selling $250 per capita each year, the community garden will need to generate a total of:
[tex]$250 * 50 members[/tex] = [tex]$12,500 per year[/tex]
Each avocado tree costs $20 and produces $125 worth of fruit per year after maturity. Therefore, the net revenue per tree per year is:
$[tex]125[/tex]- $[tex]20[/tex] = $[tex]105[/tex]
Since it takes 3 years for a tree to mature, we can calculate the net revenue per tree over 3 years as:
$[tex]105[/tex] x [tex]3[/tex] = $[tex]315[/tex]
To meet the annual revenue goal of $12,500, the community garden will need to plant:
$[tex]12,500[/tex] / $315 per 3-year period = [tex]39.68[/tex] trees
Since we can't plant fractional trees, we need to round up to the nearest whole number. Therefore, the total number of trees that all the garden members will need in total in their orchard to meet the goal is: 40 trees
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Find the volume of the hemisphere. Round to the nearest tenth.
6.7 ft
cubic feet
Answer:
78.7 cubic feet
Step-by-step explanation:
Remember that a hemisphere is half of a sphere, so finding the volume of a hemisphere is really just finding half of the volume of a sphere.
Volume of sphere = (4 * π / 3) * r ^ 3 , where r = diameter / 2.
So, volume of hemisphere = volume of sphere / 2 .
Volume of sphere = (4 * π / 3) * (6.7 / 2) ^ 3 = 157.47914.....
Volume of hemisphere = 157.47914....... / 2 = 78.7396..........
So it would approximately be 78.7 cubic feet
(L2) A circle that contains a polygon so that it passes through each vertex of the polygon is a(n) _____ circle.
(L2) An inscribed circle is one that encompasses a polygon so that it passes by each of the polygon's vertices.
A circumcircle, not an inscribed circle, is a circle that encircles a polygon at each vertex. A circle that is enclosed within a polygon and intersects each side of the polygon exactly once is said to be inscribed. A circumcircle, on the other hand, is a circle that goes through every vertex of the polygon, with its center located at the point where the perpendicular bisectors of the polygon's sides converge. The greatest circle that can be drawn within a polygon is the circumcircle, while the largest circle that can be drawn inside a triangle is the inscribed circle.
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Remember to use information in the
problem to make assumptions that can help
you model and solve the problem.
Monica wants to buy a 1-month supply of dog
food. She can buy a 20-pound bag of dog food
for $18 or a 30-pound bag for $24. Twice a
day, she feeds her dog 6 ounces of food. Which
bag of dog food should she buy? Explain.
1. What assumptions can you make?
2. What model can you use to solve the
problem?
Plssss helppp it’s a grade
Monica should buy the 30 pound bag of dog food
How to solve for the bag of food that she has to buyThe 20-pound bag contains 20 x 16 = 320 ounces of dog food.
The 30-pound bag contains 30 x 16 = 480 ounces of dog food.
Next, we can determine the cost per ounce of each bag:
The 20-pound bag costs $18, so the cost per ounce is 18 / 320 = $0.05625 per ounce.
The 30-pound bag costs $24, so the cost per ounce is 24 / 480 = $0.05 per ounce.
Finally, we can set up a proportion to compare the cost of each bag of dog food:
Cost of 20-pound bag / 320 ounces = Cost of 30-pound bag / 480 ounces
Simplifying this proportion, we get:
18 / 320 = x / 480
where x is the cost of the 30-pound bag. Solving for x, we get:
x = 24
Therefore, the cost of the 30-pound bag is lower than the cost of the 20-pound bag per ounce of dog food. Since the quality of the dog food is assumed to be the same for both bags, Monica should buy the 30-pound bag of dog food.
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he base of a triangle exceeds the height by 7 yards. if the area is 372 square yards, find the length of the base and the height of the triangle.
The length of the base is approximately 34.28 yards and the height is approximately 27.28 yards.
Let's use the formula for the area of a triangle:
A = (1/2) × b × h, where A is the area, b is the length of the base, and h is the height of the triangle.
From the problem statement, we know that:
b = h + 7 (the base exceeds the height by 7 yards)
A = 372 (the area is 372 square yards)
Substituting the first equation into the formula for the area, we get:
A = (1/2) × (h+7) × h = 372
Multiplying both sides by 2, we get:
(h+7) × h = 744
Expanding the left side and rearranging, we get:
[tex]$h^2 + 7h - 744 = 0$[/tex]
This is a quadratic equation that we can solve using the quadratic formula:
[tex]h = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}[/tex]
where a = 1, b = 7, and c = -744.
Plugging in these values, we get:
[tex]h &= \frac{-7 \pm \sqrt{7^2 - 4(1)(-744)}}{2(1)} \\ &= \frac{-7 \pm \sqrt{7^2 + 4\cdot 744}}{2} \\ &= \frac{-7 \pm \sqrt{5969}}{2} \end{align*}[/tex]
We can ignore the negative root since h must be positive, so:
h = (-7 + sqrt(5969)) / 2 ≈ 27.28
Now we can use the first equation to find the length of the base:
b = h + 7 ≈ 34.28
Therefore, the length of the base is approximately 34.28 yards and the height is approximately 27.28 yards.
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Answer:
Step-by-step explanation:
Let's call the height of the triangle "h" and the length of the base "b".
We are given that the base exceeds the height by 7 yards, so we can write:
b=h+7
We are also given that the area of the triangle is 372 square yards, so we can write:
(1/2)bh=372
Now we can substitute the expression for b from the first equation into the second equation:
(1/2)(h+7)h=372
Multiplying out the left-hand side:
(1/2)(h^2+7h)=372
Multiplying both sides by 2 to eliminate the fraction:
h^2+7h=744
Bringing all the terms to one side of the equation:
h^2+7h-744=0
Now we can solve the quadratic equation for h using the quadratic formula:
h=(-b±sqrt(b^2-4ac))/2a
In this case, a=1, b=7, c=-744
h=(-7±sqrt(7^2-4(1)(-744)))/2(1)
h=(-7±sqrt(7^2+2976))/2
We can discard the negative solution since the height can't be negative. So, we have:
h=(-7+sqrt(2985))/2
h≈24.2 yards
Now, we can use the first equation to find the length of the base:
b=h+7
b≈31.2 yards
If asked to round to the nearest whole number:
h=24 yards
b=31 yards
If we remove an abitrary edge from a tree, then the resulting graph will be:.
If we remove an arbitrary edge from a tree, the resulting graph will still be connected and acyclic (meaning it does not contain any cycles). This is because a tree is defined as a connected and acyclic graph. Removing an edge will not disconnect the graph since there is always at least one path between any two vertices in a tree. However, the resulting graph will no longer be a tree, as a tree must have exactly one fewer edge than vertices.
If we remove an arbitrary edge from a tree, then the resulting graph will be:
1. A disconnected graph: Since a tree is a connected graph with no cycles, removing an edge will separate it into two components.
2. The components will be trees: Each component will still have no cycles and will remain connected.
So, when you remove an arbitrary edge from a tree, the resulting graph will be a disconnected graph with two tree components.
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you have a cup with 19 coins inside. the total inside the cup is 1.30. determine how many nickels and dimes are inside the cup
There are 12 nickels and 7 dimes in the cup.
What is equation?An equation can be described mathematically as a statement that supports the equality of two expressions joined by the equals sign "=".
Let x be the number of nickels and y be the number of dimes in the cup.
We know that:
x + y = 19 (the total number of coins)
0.05x + 0.10y = 1.30 (the total value of coins in dollars)
We can use the first equation to express y in terms of x:
y = 19 - x
Substituting this into the second equation, we get:
0.05x + 0.10(19 - x) = 1.30
0.05x + 1.90 - 0.10x = 1.30
-0.05x = -0.60
x = 12
Therefore, there are 12 nickels and 7 dimes in the cup.
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A plane intersects only one nappe of a double-napped cone such that it is parallel to a generating line. Which conic section is formed?.
When a plane intersects only one nappe of a double-napped cone such that it is parallel to a generating line, it forms a parabola.
When a plane intersects only one nappe of a double-napped cone parallel to a generating line, it forms a conic section known as a parabola. This is because a parabola is defined as the set of all points that are equidistant to a fixed point (known as the focus) and a fixed line (known as the directrix).
When a plane intersects a double-napped cone parallel to a generating line, it intersects all the generatrices at the same angle, resulting in a curve that is symmetric and opens in one direction. This curve is a parabola, and it is commonly found in nature, such as the path of a thrown ball, the shape of a satellite dish, or the reflector of a car's headlights.
The properties of a parabola make it useful in various fields, including optics, physics, and engineering, where it is used to model and analyze a wide range of phenomena, such as the trajectory of projectiles, the behavior of lenses and mirrors, and the design of antennas and reflectors.
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find the end behavior for g
the equation is y=g(x)
Find F'(x): F(x) = Sx -3 (-t² + 5)dt
The derivative of F(x) is F'(x) = -x² + 5.
What is derivative?
In calculus, the derivative of a function is a measure of how the function changes as its input changes. More specifically, the derivative of a function at a certain point is the instantaneous rate of change of the function at that point.
To find the derivative of F(x), we need to use the Fundamental Theorem of Calculus and apply the chain rule.
The Fundamental Theorem of Calculus states that:
∫a to x f(t)dt = F(x) - F(a)
where F(x) is the antiderivative of f(x) and a is a constant.
Using this theorem, we can find the derivative of F(x) by first finding its antiderivative:
F(x) = ∫Sx to 3 [(t² - 5)dt]
To find the antiderivative of (t² - 5), we can use the power rule:
∫(t² - 5)dt = (t³/3) - 5t + C
where C is the constant of integration.
Substituting this antiderivative back into F(x), we get:
F(x) = [(3³/3) - 5(3)] - [(Sx³/3) - 5(Sx)]
Next, we can find the derivative of F(x) using the chain rule:
F'(x) = -x² + 5
Therefore, the derivative of F(x) is F'(x) = -x² + 5.
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how do you find cube roots and squared roots without calculating
The methods of finding cube roots and squared roots without calculating include: Estimation, Logarithms and factoring
How to find cube roots and squared roots without calculatingHere are some general methods:
1. Cube roots
- Estimation: Finding the nearest perfect cube and taking its cube root is one approach to estimate the cube root of a number.
- Logarithms: Logarithms are another method for calculating the cube root of an integer.
2. Square roots:
- Estimation: Finding the nearest perfect square and taking its square root is one approach to estimate the square root of an integer.
- Factoring: Another method for determining the square root of a number is to divide it into its prime factors and then take the square root of the result.
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What is the degree of 12x + 5x^2 - 99x^5
The degree of the expression 12x+5x²-99x⁵ is
What is degree of an expression?The degree of an algebraic expression is the highest power of the variable in the expression. An expression can have a variable or more.
For example, the degree of the expression 5y⁷+ 6y⁴+ 3y² is 7 because 7 is the highest exponent of the variable y in the expression.
Similarly the expression 12x+5x²-99x⁵ has 3 terms with x has the variable. The highest power of x in the expression is 5. Therefore the degree of the expression is 5.
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the streets of millston are laid out like a grid with each square block being the same size the distance from a movie theather to a resturant is 1/2 mile along cabot street. if there are excatly 4 blocks between the two locations how long is each block
Answer:
Step-by-step explanation:
28
Solve dy/dx=1/3(sin x − xy^2), y(0)=5
The general solution to the differential equation dy/dx = 1/3(sin x − xy^2), y(0)=5 is: y = ±√[(sin x - e^(x/2)/25)/x], if sin x - xy^2 > 0 and y(0) = 5
To solve this differential equation, we can use separation of variables.
First, we can rearrange the equation to get dy/dx on one side and the rest on the other side:
dy/dx = 1/3(sin x − xy^2)
dy/(sin x - xy^2) = dx/3
Now we can integrate both sides:
∫dy/(sin x - xy^2) = ∫dx/3
To integrate the left side, we can use substitution. Let u = xy^2, then du/dx = y^2 + 2xy(dy/dx). Substituting these expressions into the left side gives:
∫dy/(sin x - xy^2) = ∫du/(sin x - u)
= -1/2∫d(cos x - u/sin x)
= -1/2 ln|sin x - xy^2| + C1
For the right side, we simply integrate with respect to x:
∫dx/3 = x/3 + C2
Putting these together, we get:
-1/2 ln|sin x - xy^2| = x/3 + C
To solve for y, we can exponentiate both sides:
|sin x - xy^2|^-1/2 = e^(2C/3 - x/3)
|sin x - xy^2| = 1/e^(2C/3 - x/3)
Since the absolute value of sin x - xy^2 can be either positive or negative, we need to consider both cases.
Case 1: sin x - xy^2 > 0
In this case, we have:
sin x - xy^2 = 1/e^(2C/3 - x/3)
Solving for y, we get:
y = ±√[(sin x - 1/e^(2C/3 - x/3))/x]
Note that the initial condition y(0) = 5 only applies to the positive square root. We can use this condition to solve for C:
y(0) = √(sin 0 - 1/e^(2C/3)) = √(0 - 1/e^(2C/3)) = 5
Squaring both sides and solving for C, we get:
C = 3/2 ln(1/25)
Putting this value of C back into the expression for y, we get:
y = √[(sin x - e^(x/2)/25)/x]
Case 2: sin x - xy^2 < 0
In this case, we have:
- sin x + xy^2 = 1/e^(2C/3 - x/3)
Solving for y, we get:
y = ±√[(e^(2C/3 - x/3) - sin x)/x]
Again, using the initial condition y(0) = 5 and solving for C, we get:
C = 3/2 ln(1/25) + 2/3 ln(5)
Putting this value of C back into the expression for y, we get:
y = -√[(e^(2/3 ln 5 - x/3) - sin x)/x]
So the general solution to the differential equation dy/dx = 1/3(sin x − xy^2), y(0)=5 is:
y = ±√[(sin x - e^(x/2)/25)/x], if sin x - xy^2 > 0 and y(0) = 5
y = -√[(e^(2/3 ln 5 - x/3) - sin x)/x], if sin x - xy^2 < 0 and y(0) = 5
Note that there is no solution for y when sin x - xy^2 = 0.
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Ryan earns five dollars for each more doggy walks and eight dollars for each large dog he walks today he walked eight dogs and made a total of $55. How many small dogs did Ryan walk?
The number of dogs that Ryan walked were 3 small dogs and 5 large dogs.
How to find the number of small dogs ?Total money earned would be:
= 5 ( small dogs ) + 8 ( number of big dogs)
We also know that the total number of dogs walked :
x + y = 8
Solving simultaneously, we get:
5 ( 8 - y ) + 8y = 55
40 - 5 y + 8 y = 55
3y = 15
y = 5 big dogs
Number of small dogs :
= 8 - 5
= 3 small dogs
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