600 ≤ X < 950 are the possible values of the number of dollars in the original pile of money.
What is range?The difference between the highest and lowest values in statistics for a particular data collection is called the range. As an illustration, if the data set contains 1, 5, 8, 12, 3, the range will be 12 - 1 = 11. The difference between the greatest and lowest observation might thus also be used to determine the range.
We need to first put the data in ascending order before we can determine the range of a particular set of observations. To determine the range, calculate the difference between the highest and minimum values afterwards.
Let X be the amount in the pile.
What is left after putting $200 in the pile = X - $200
4/5 = 0.8
What she gives away = 0.8 (X - 200)
The remaining is : 0.2 (X - 200) what she puts in her right pocket.
200 + 0.2(X - 200) > X - 600
200 - 0.2X - 40 > X - 600
Solving the inequality we have :
= 160 + 0.2x > X - 600
= 760 > X - 0.2X
= 760 > 0.8X
= 950 > X
This implies : X < 950
It is said : X ≥ 600
The possible range of X is thus : 600 ≤ X < 950
thus, 600 ≤ X < 950 are the possible values of the number of dollars in the original pile of money.
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A collection of jewelry includes two rings, one 10 years old and the other 31 years old. In how many years will the older ring be twice as old as the newer ring? i dont now what to do pls help me
seven less than the product of 6 and a number equals 8. Use the variable w for the unknown number. Write it as an equation
Answer: 6w - 7 = 8
Step-by-step explanation:
We will write an equation using w for the unknown number using the mathematical vocabulary used in the sentence.
seven less than ➜ - 7
product of 6 and a number ➜ 6w
equals 8 ➜ = 8
6w - 7 = 8
event a happens with probability 0.8 and event b happens with probability 0.6. the probability that at least one of the events happens is 0.9. find the probability of event b, given that event a happened.
On solving the provided question, we can say that probability P(B)(1–0.6)=0.3 =>P(B)=3/4= 0.75
What is probability?Probability theory, a subfield of mathematics, gauges the likelihood of an occurrence or a claim being true. An event's probability is a number between 0 and 1, where approximately 0 indicates how unlikely the event is to occur and 1 indicates certainty. A probability is a numerical representation of the likelihood or likelihood that a particular event will occur. Alternative ways to express probabilities are as percentages from 0% to 100% or from 0 to 1. the percentage of occurrences in a complete set of equally likely possibilities that result in a certain occurrence compared to the total number of outcomes.
If two events A and B are independent then,
[tex]P(A n B)= P(A).P(B)\\P(A u B)= P(A)+P(B)-P(A n B)[/tex]
Since A and B are independent, so
[tex]P(A u B)= P(A)+P(B)-P(A).P(B)\\0.9=0.6+P(B)-(0.6 * P(B))\\P(B)(1–0.6)=0.3\\P(B)=3/4= 0.75[/tex]
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Are the ratio 1 is to 2 is to 3 equivalent?
the ratio 1 is to 2 is equivalent to 3: 6
What is an equivalent ratios?
A ratio compares two quantities named as antecedent and consequent, by the means of division. For example, when we cook food, then each ingredient has to be added in a ratio. Thus, we can say, a ratio is used to express one quantity as a fraction of another quantity.
Two ratios are equivalent to each other if one of them can be expressed as the multiple of the other. Hence, to get the equivalent ratio of another ratio, we have to multiply the two quantities (antecedent and consequent) by the same number.
Given ratios are 2:1 and 3:1
we can write it as 2/1 and 3/1.
The lcm of 2 and 3 is 6.
Multiply denominator of both ratio with 6, we get
2/6 and 3/6 And we can see both the ratios are not equal.
Hence, there are not equivalent ratios.
4:1 and 8:3 are equivalent ratios -----> is false, because 4:1 is equivalent to 8:2
11:2 and 2:11 are equivalent ratios------> is false (because, are reciprocal ratios, not equivalent ratios)
3:1 and 9:3 are equivalent ratios ------> is true
because 3:1 multiply both sides by 3 -----> 3*3:1*3=9:3
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Mr.Gardener wants to have an annual interest of $1000.0. If the annual interest rate is 5%, how much money should he invest?
Answer:
20,000
Step-by-step explanation:
1,000/ 5% = 20,000
a student is randomly choosing the answer to each of 5 multiple choice questions in a test. each question has 4 possible answers. how many possible ways can the student answer the five questions
The student has 1024 number of possible ways to answer the five multiple choice questions in the test, since there are 4 possible answer choices for each question.
The student has 1024 possible ways to answer the five multiple choice questions in the test, since there are 4 possible answer choices for each question.
4*4*4*4*4 = 1024
The student has 4 number of possible answer choices for each question. This means that for each question the student has 4 possible choices.
For the 5 multiple choice questions, the student has 4 possible choices for each question. This means that the student has 4^5 = 4*4*4*4*4 = 1024 possible ways to answer the five questions.
The student has 1024 possible ways to answer the five multiple choice questions in the test, since there are 4 possible answer choices for each question.
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Work out the value of
(a) 64 -1/2
(b) 81 -1/2
(c) 64 -1/3
(d) 125 -1/3
Answer:
Step-by-step explanation:
(a) To work out the value of 64 - 1/2, we first need to understand that -1/2 is the same as raising the number to the power of -1/2. So, 64 -1/2 can be written as 64^(-1/2)
The value of 64^(-1/2) is equal to 1/√(64) = 1/8
(b) To work out the value of 81 - 1/2, we can write it as 81^(-1/2)
The value of 81^(-1/2) is equal to 1/√(81) = 1/9
(c) To work out the value of 64 - 1/3, we can write it as 64^(-1/3)
The value of 64^(-1/3) is equal to 1/∛(64) = 1/4
(d) To work out the value of 125 - 1/3, we can write it as 125^(-1/3)
The value of 125^(-1/3) is equal to 1/∛(125) = 1/5
Note: √ represents square root and ∛ represents cube root
PLEASE HELP! THIS IS TIMED.. (WILL GIVE BRAINLIEST IF ANSWER IS CORRECT)
Answer: A
Step-by-step explanation:
1/5k-2/3j=-2/3j+1/5k
Can 2.5 cm 6.5 cm 6 cm be the sides of a right triangle?
2.5 cm, 6.5 cm, and 6 cm are the sides of a right triangle.
The sides of a triangle are 2.5 cm, 6.5 cm, and 6 cm in length.
The Pythagorean Theorem states that The sum of the squares representing the base and height equals the square of the hypotenuse.
[tex](Perpendicular)^{2}+(Base)^{2}=(Hypotenuse)^{2}[/tex]
[tex](2.5)^{2}+(6)^{2}=(6.5)^{2}[/tex]
6.25 + 36 = 42.25
42.25 = 42.25
The sides offered satisfy the specifications for a right triangle.
Given that it satisfies the Pythagorean theorem, a right triangle with sides of 2.5 cm, 6.5 cm, and 6 cm can be built.
Hence, 2.5 cm 6.5 cm 6 cm can be the sides of a right triangle.
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what is the area of a triangle if the legs ar5e x and y long. if the first leg of the triangle is x and the length of the second leg is y, the formula
The area of a triangle is Area = sqrt(s(s-x)(s-y)(s-c)).
The area of a triangle can be found using the Heron's formula if we know the lengths of all three sides, or using the formula (1/2) * x * y if we know the lengths of two legs and the triangle is a right triangle.
In the case where the legs of the triangle are x and y long, if we don't know if the triangle is a right triangle, we can't use the formula (1/2) * x * y. However, we can use Heron's formula to calculate the area. Heron's formula states that the area of a triangle is equal to the square root of s(s-a)(s-b)(s-c), where s is the semi-perimeter of the triangle and a, b, and c are the lengths of the three sides.
In this case, since we know the lengths of the two legs x and y, we can find the area of the triangle using Heron's formula as follows:
s = (x + y + c)/2
Area = sqrt(s(s-x)(s-y)(s-c))
Where c is the length of the hypotenuse of the triangle, this information is not provided, so we cannot calculate the area of the triangle.
Therefore, The area of a triangle is Area = sqrt(s(s-x)(s-y)(s-c)).
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Which point is an approximate extrapolation for x = 30 from the line of best fit?
(30,38) is an approximate extrapolation for x = 30 from the line of best fit.
The equation of the Linear Regression line is
y=1.14 x + 3.805
A line of regression is that line that passes through none of the points, few points, or all the points in the two-dimensional coordinate plane. It tells the value of one variable when another variable is known.Q asking 4 an approximate for x=30
So (23,30) and (44,30) are out.
From the line of best fit:
x=0, y=4
x=16, y=22
x increases by 16 and y increases by 22-4=18
so at x=32, y=22+18 ⇒y=40
at x=30, the nearest best answer is (30,38).
Therefore, (30,38) is an approximate extrapolation for x = 30 from the line of best fit.
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Determine the value of X
The two angles are (x+10) and the other number is 96
Answer: 43
Step-by-step explanation:
x+x+10 = 96
2x = 86
x = 43
if the nth term of an ap is 4n+1,then it's 3''' term is
We have,
nth term = 4n+1
Putting n = 3, we have the 3rd term, i.e.,
4(3) + 1 = 12 + 1 = 13
Answer:
13
How do I solve this?
Answer:
DB = 15
Step-by-step explanation:
∠ C and ∠ D are the base angles of Δ BCD
since they are congruent , that is ∠ D = ∠ C
Then the triangle is isosceles with the legs being congruent, so
DB = BC = 15
ben participates in a prize draw. he receives one prize that is equally likely to be worth $5, $10 or $20. jamie participates in a different prize draw. she receives one prize that is equally likely to be worth $30 or $40. what is the probability that the total value of their prizes is exactly $50?
The probability of getting a total value of $50 is 1/6.
There are three possible outcomes for Ben's prize: $5, $10, or $20.
There are two possible outcomes for Jamie's prize: $30 or $40.
Therefore, there are 3 x 2 = 6 total possible outcomes for the combined value of their prizes.
To find the probability that the total value of their prizes is exactly $50, we need to find the number of outcomes that result in a total value of $50, and divide that by the total number of possible outcomes.
The only way to get a total value of exactly $50 is that Ben wins $20 and Jamie wins $30. This is only one combination out of 6 possible combinations. So the probability of getting a total value of $50 is 1/6 or approximately 0.166.
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Let U = (a, b, c, d, e, f, g, h, i, j, k}.
Let A = {a, b, c, d, e, j}.
Let B={b, c, d, e, h}.
Let C= {a, c, f, j, k}.
Determine An C.
....
B
Choose the correct answer below and, if necessary, fill in the answer box in your choice.
A. An C= {aj) (Use a comma to separate answers as needed.)
B. An C is the empty set.
Answer:
See below
Step-by-step explanation:
[tex]A\cap C=\{a,c,j\}[/tex] because elements a, c, and j are contained in both sets A and C
How can an absolute value equation help you calculate the distance from one point to another on the coordinate plane when the points are on the same vertical or horizontal line?
The distance between the two points can be calculated from the absolute value equation if the points are on the same vertical or horizontal line
What is the distance of a line between 2 points?The distance of a line between 2 points is always positive and given by the formula
Let the first point be A ( x₁ , y₁ ) and the second point be B ( x₂ , y₂ )
The distance between A and B is D , and the distance D is
Distance D = √ ( x₂ - x₁ )² + ( y₂ - y₁ )²
Given data ,
Let the distance be represented as D
Let the two points lie on the same vertical line
So , let the two points be P ( x , y₁ ) and Q ( x , y₂ )
The x coordinate of the two points remains the same
So , the difference between the y coordinate will give us the distance between the two points on the vertical line
So , | y₂ - y₂ | = distance D
The absolute value will always gives the result as a positive value and distance is always positive
Now , Let the two points lie on the same horizontal line
So , let the two points be R ( x₁ , y ) and S ( x₂ , y )
The y coordinate of the two points remains the same
So , the difference between the x coordinate will give us the distance between the two points on the horizontal line
And , | x₂ - x₁ | = distance D
The absolute value will always gives the result as a positive value and distance is always positive
Hence , the absolute value equation is used to calculate the distance if the two points are on the same line
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2 multiples of eight that are squared in numbers
Nina hired a car in the United States.
The cost of hiring the car was $294.
The exchange rate is £1 = $1.4.
Work out the cost of hiring the car in pounds.
The cost of hiring the car in pounds Nina hired is £210.
What is a unitary method?A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.
Given, Nina hired a car in the United States. The cost of hiring the car was $294.
Now, To covert the dollar into pounds, we have to multiply the total amount in dollars by the unit conversion rate which is, £1 = $1.4 ⇒ $1 = £(1/1.4),
Therefore,
$294 is equal to £(294/1.4) = £210.
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Two players take turns putting pennies on a round table, one penny per turn, withoutpiling one penny on top of another. The player who cannot place a penny loses. Design a winningstrategy for the first player.
The first player will eventually win, when the second player runs out of free slots.
On the first move place the coin on the center of the table.
Then player B will place his coin anywhere on the table.
Now, you put your coin on the line of diameter passing through the coin placed by player B, at the same distance away from the boundary of the circle ( mimic his placement on the opposite side of the table).
If player A has space to place a coin, so will player B. Player B will run out of place before player A.
The first player will eventually win, when the second player runs out of free slots.
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An amount of $28,000 is borrowed for 5 years at 3.25% interest, compounded annually. If the loan is paid in full at the end of that period, how much must be paid back?
$32,250 must be paid back at the end of the 5-year period if the loan is paid in full.
What exactly does compounding mean?Compounding is the method through which interest is added to both the principle balance already in place and the interest that has already been paid. Thus, compounding can be thought of as interest on interest, with the result that returns on interest are magnified over time, or the so-called "magic of compounding."
A = P * (1 + rt)
Where A is the amount to be paid back, P is the principal amount borrowed (28,000), r is the interest rate (3.25%), t is the number of years (5), and t is the time period in years.
So, plugging in the values, we have:
A = 28,000 * (1 + 0.0325 * 5) = 28,000 * (1 + 0.1625) = 28,000 * 1.1625 = 32,250
So, $32,250 must be paid back at the end of the 5-year period if the loan is paid in full.
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Jasmine plans on running three laps. How many yards will Jasmine run? Use 3.14 for Pi.
248.5 yd
490.5 yd
725.5 yd
745.5 yd
Answer: The answer would be 745.5 yd.
Each lap is 250 yd, and Jasmine plans on running 3 laps, so 3*250 = 750 yd.
The answer is 745.5 yd, which is the closest to 750 yd.
Step-by-step explanation:
If 10% of a number is 26 and 25% of the same number is 65, what is 15% of that number
15% of that number is 39.
What is a percentage?
A percentage is a way to express a number as a fraction of 100. It is commonly used to represent a proportion or ratio of a number to a whole. For example, 10% of a number means 10/100 or 1/10 of that number, 25% means 25/100 or 1/4 of that number, and 15% means 15/100 or 3/20 of that number.
To find 15% of a number, if we know that 10% of it is 26, and 25% of it is 65, we can use algebra:
Let X be the number we're trying to find
10% of X = 0.10X = 26
25% of X = 0.25X = 65
We know that 15% is between 10% and 25% so we can use the proportionality between them:
15% of X = 0.15X = (15/10)*26 = 39
Hence, 15% of that number is 39.
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In a circle with radius 2, an angle measuring 2.1 radians intercepts an arc. Find the
length of the arc to the nearest 10th.
Answer:
4.2 units
Step-by-step explanation:
To find the length of the arc, we can use the relationship between the length of an arc, the radius of the circle and the measure of the angle in radians. This relationship is:
arc length = (angle in radians) * (radius)
In this case, the radius is 2 and the angle in radians is 2.1. So we can substitute these values into the equation:
arc length = (2.1) * (2)
arc length = 4.2
So the length of the arc is 4.2 units to the nearest 10th
HELP ASAP PLEASE! Find all the cube roots of -512.
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The real cube root(s) of -512 is/are [}.
B. There are no real cube roots of -512.
Answer:
A; -8
Step-by-step explanation:
Well, the cube root of 512 is just 8, and because the root is an odd number, we can allow negative numbers as the answer instead of imaginary numbers. Therefore the real cube root of -512 is just -8
during the 2000 season, the home team won 138 of the 240 regular season national football league games. is this strong evidence of a home field advantage in professional football? test an appropriate hypothesis and state your conclusion. be sure the appropriate assumptions and conditions are satisfied before you proceed.
A) The 95% confidence interval is:
0.58 ± 0.062
B) At the 0.01 probability value, there is neither substantial evidence of a home-field advantage in professional football (they won and over half of the games).
Now, According to the question:
A) Confidence interval is written as
Sample proportion ± margin of error
Margin of error = z × [tex]\frac{\sqrt{pq} }{n}[/tex]
Where:
z = The z score corresponds to the amount of confidence.
p = sample proportion.
q = probability of failure
q = 1 - p
p = x/n
Where
n = the number of samples
x = the number of success
From the information given,
n = 240
x = 138
p = 138/240 = 0.58
q = 1 - 0.58 = 0.42
To determine the z score, The confidence level from 100% to get α
α = 1 - 0.95 = 0.05
α/2 = 0.05/2 = 0.025
Thus,
1 - 0.025 = 0.975
The z -score associated with the area just on z table approximately 1.96. Therefore, the z score with a 95% confidence level is 1.96.
As a result, the 95% confidence interval becomes
0.58 ± 1.96√(0.58)(0.42)/240
Confidence interval is
0.58 ± 0.062
B) Earning more than half of the games equates to winning 120 games or more.
p = 120/240 = 0.5
The hypothesis test will be
For the null hypothesis,
P ≥ 0.5
For the alternative hypothesis,
P < 0.5
Probability of success, p = 0.5
q = probability of failure = 1 - p
q = 1 - 0.5 = 0.5
Considering the sample,
Sample proportion, P = x/n
Where
x = number of success = 138
n = number of samples = 240
P = 138/240 = 0.58
We need to find the values of the test statistic which will be the z score
z = (P - p)/√pq/n
z = (0.58 - 0.5)/√(0.5 × 0.5)/240 = 2.48
Remember that this is a two-tailed test. We would use the normal distribution table to calculate the probability potential of the property to the right of both the z score.
P value will be = 1 - 0.9934 = 0.0066
Since alpha, 0.01 > the p value, 0.0066, then we would reject the null hypothesis.
The given question is incomplete, The complete question is this:
__"During the 2000 season, the home team won 138 out of 240 regular season National Football League games. (15 points) a) Construct a 95% confidence interval for the winning proportion of the home team during this season. b) At the 0.01 significance level, is there strong evidence of a home field advantage (they win more than half of the games) in professional football? State hypotheses, calculate the test statistic and p-value, and make a conclusion in context"__
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Jeff bought his house in 2010 for $180,000. Currently the house is worth $315,000. Find the percent of change .
Answer:
To find the percent of change, we can use the following formula:
(New Value - Old Value) / Old Value x 100
In this case, the new value is $315,000 and the old value is $180,000.
So the percent of change is:
($315,000 - $180,000) / $180,000 * 100
This evaluates to:
$135,000 / $180,000 * 100 = 0.75 * 100 = 75%.
Therefore, the percent of change is 75%.
well, the change or difference was 315000 - 180000 = 135000.
if we take $180,000 (origin amount) to be the 100%, what's 135,000 off of it in percentage?
[tex]\begin{array}{ccll} amount&\%\\ \cline{1-2} 180000 & 100\\ 135000& x \end{array} \implies \cfrac{180000}{135000}~~=~~\cfrac{100}{x} \\\\\\ \cfrac{ 4 }{ 3 } ~~=~~ \cfrac{ 100 }{ x }\implies 4x=300\implies x=\cfrac{300}{4}\implies x=75[/tex]
Give an example of a search problem you encounter in everyday life. Does it use sequential, binary, or some other search algorithm?
One example of a search problem I encounter in everyday life is finding a specific item in a grocery store.
What is algorithm?An algorithm is a set of instructions designed to perform a specific task. Algorithms are a key component of computer programming, used to create programs that can solve problems and perform tasks. Algorithms are typically used to solve complex problems and can be thought of as a set of steps that must be followed in order to achieve a desired goal. Algorithms can range from simple, such as a basic sorting algorithm, to complex, such as an artificial intelligence algorithm.
This search problem generally uses a sequential search algorithm, where I must search through the aisles of the store in order to locate the item. This is a linear search, where I may have to search each aisle until I find the item. This type of search is effective for larger stores with many items, as it is relatively simple and efficient.
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Given: \overline{DC} DC bisects \angle ACB∠ACB and \overline{AC} \cong \overline{BC}. AC ≅ BC . Prove: \triangle ACD \cong \triangle BCD△ACD≅△BCD.
The congruent angles, ∠ACD and ∠BCD formed by the angle bisector [tex]\overline{DC}[/tex] the congruent segments [tex]\overline{AC}[/tex] and [tex]\overline{BC}[/tex], and the segment [tex]\overline{DC}[/tex] (congruent to itself, indicates that ΔACD ≅ ΔBCD by SAS
What is the SAS congruency rule?The SAS (Acronym for Side-Angle-Side) congruency rule states that two triangles, A and B are congruent if two sides and an included angle of the triangle A are congruent to the two sides and an included angle of the other triangle B.
The specified information are;
The bisector of ∠ACB = [tex]\overline{DC}[/tex]
Segment [tex]\overline{AC}[/tex] ≅ [tex]\overline{BC}[/tex]
Required; to prove that ΔACD ≅ ΔBCD
The two-column method can be used to prove the congruency of the triangles as follows;
Step [tex]{}[/tex] Statement [tex]{}[/tex] Reasons
1. [tex]{}[/tex] [tex]\overline{DC}[/tex] bisects ∠ACB Given
[tex]{}[/tex] [tex]\overline{AC}[/tex] ≅ [tex]\overline{BC}[/tex]
2. [tex]{}[/tex] ∠ACD ≅ ∠BCD Definition of bisected angles
3. [tex]{}[/tex] [tex]\overline{CD}[/tex] ≅ [tex]\overline{CD}[/tex] Reflexive property of congruency
4. [tex]{}[/tex] ΔACD ≅ ΔBCD SAS congruency rule
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negative 3 plus negative 5
Answer: -8
Hope this helps :)
Step-by-step explanation:
Adding two negative integers is just like adding two regular numbers
Answer:
negative 8
Step-by-step explanation:
calculator