Answers
Answer: -2/5 is the answer.
Step-by-step explanation:
Related Questions
It took 1649 years for the world population to double, going from 0.25 billion people to 0.5 billion people. Looking at your graph, how many years did it take for the population to double once again
Answers
Rates of birth and death within that group dictate the rate at which world's population would double.
The human population doubled from 500 million to 1 billion people in how long?200 years
500 million people became 1 billion people around the world in 200 years, or until 1825. The second doubling, from 1 billion to 2 billion in 1930, only took 100 years. The subsequent doubling, from 4 billion to 6 billion by 1975, only took 45 years. The first billion people on earth were present in the year 1830; the second billion were present in the years 1830 to 1930; and the third billion were present in the year 1990, which happened 60 years later.
The world's population increased to 500 million to one billion people in 200 years, starting in 1825.
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Jose wants to ride his bicycle 41.2 miles this week. He has already ridden 4 miles. If he rides for 6 more days, what is the average number of miles he would have to ride each day to meet his goal?
Answers
maybe try not
Step-by-step explanation:
Answer:
it would be 6 miles a day
Step-by-step explanation:
do to 41.2 miles in 1 week and a 4 mile start plus six more days it would be 6x6=36+4=40
Mei Mei has a part-time job at an ice skating rink selling hot cocoa. She decided to plot the number of hot cocoas she sold relative to the day's high temperature and then draw the line of best fit. Based on the line of best fit, how many hot cocoas would you predict Mei Mei to sell if the day’s high temperature were 42 ∘ ∘ F? 2 4 6 8 10 12 14 16 18 20 22 24 70 73 76 79 82 85 88 91 94 97 100 103
Answers
The number of hot cocoas that Mei Mei would be predicted to sell if the day’s high temperature was of 42 ºF is given as follows:
58.
How to define the linear function?The slope-intercept definition of a linear function is given as follows:
y = mx + b.
For which the parameters are given as follows:
m is the slope, representing the rate of change.b is the intercept, representing the value of y when x = 0.The function touches the y-axis at y = 100, meaning that the intercept b is defined as follows:
b = 100.
When x increases to six, y decays to 94, hence the slope m is obtained as follows:
m = (94 - 100)/(6 - 0)
m = -1.
Hence the function that predicts the amount of hot cocoa sold for a high temperature of x ºF is given as follows:
y = -x + 100.
The estimate if the high temperature was of 42 ºF is given as follows:
y = -42 + 100
y = 58.
Missing InformationThe graph of the linear function is given by the image presented at the end of the answer.
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A graphic artist uses a program to draw geometric shapes in a given pattern. The program uses an algorithm that draws the shapes based on input from the artist. The table shows the approximate number of steps the algorithm takes to draw different numbers of shapes.
Based on the values in the table, which of the following best characterizes the algorithm for drawing n
shapes, where n
is a very large number?
answer choices
The algorithm runs in a reasonable amount of time because it will use approximately n
steps to draw n
shapes.
The algorithm runs in a reasonable amount of time because it will use approximately N 2 steps to draw n shapes.
The algorithm runs in an unreasonable amount of time because it will use approximately n steps to draw n shapes.
The algorithm runs in an unreasonable amount of time because it will use approximately N 2 steps to draw n shapes.
Answers
The algorithm completes in an acceptable amount of time because it will draw n forms in around n2 steps.
what is algorithm ?A mathematical algorithm is a process that describes a series of steps that can be used to accomplish a mathematical computation. A typical illustration of a mathematical algorithm would be the step-by-step process used in long division. A set of instructions called an algorithm is used to solve a problem or complete a task. An algorithm is a set of instructions that spells out how to carry out a task. An algorithm can be thought of as a series of detailed instructions that result in a predictable pattern in a set of numbers or in lines of code.
given
Which of the following best describes the algorithm for drawing n forms, where n is a very big number based on the numbers in the table.
Because it will take around n2 steps to draw n forms, the algorithm completes in a fair length of time.
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What is K5 or K3 3 graph?
Answers
K5 is a non-plannar graph with a minimum number of edges on 5 vertices and K3,3 is a non-plannar graph with a minimum number of edges on 6 vertices.
What is the K3-3 graph or K5?
K5 is a five-vertex graph with one edge between each pair of vertices. One edge connects each pair of vertices from opposing sets in graph K3,3 which has six vertices in two sets of three.
Both K5 and K3,3 are non-planar graphs having a minimal number of edges on their respective sets of 5 and 6 vertices, respectively.
Every appropriate sub-graph of a minimum non-planar graph G is a planar non-planar graph. 4.
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What is the measure of angle x?
Answers
Answer: 112 degrees
Step-by-step explanation:
Since the two lines are parallel and the line that intersects them is a transversal, 180 - 68 = x
Solving 180 - 68,
you can find that x = 112 degrees :>
Answer: a measure of an x angle is the longest line on the graph so that how u know
Step-by-step explanation:
What does the graph of the function at each interval represent?
Answers
The graph of the function at each interval represent
(1) - increasing, (2) - decreasing, and (3) - decreasing.
What is graph of the function?
The set of ordered pairs where f(x) = y is displayed as the graph of a function in mathematics. These pairs are the Cartesian coordinates of points in two-dimensional space and, in the typical case where x and f(x) are real numbers, they form a subset of this plane.
Let the graph of the function is given.
We have to find What does the graph of the function at each interval represent.
As we can see that there are three intervals of the graph are shown (1), (2), and (3).
We can see that in the first interval (1) the graph is increasing.
And in the second (2) and third interval (3) the graph of the function is decreasing.
Hence, the graph of the function at each interval represent
(1) - increasing, (2) - decreasing, and (3) - decreasing.
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Sketch the solution to each system of inequalities. Then, write one possible solution (as a
coordinate point) for each of the system of inequalities.
1) x <-4
y<-x-7
2) y<-3x-8
y>5x+8
Answers
Possible solution for the first system of inequality is (-4,-3) and Possible solution for the second system of inequality is (-2,-2).
What is Inequality?A linear inequality is one that would result in a linear equation if we were to substitute the equals relation for the inequality. When solving the inequality, the direction of an inequality is reversed when we multiply or divide both sides by a negative value.The collection of all solutions makes up the solution set for an inequality.
Here,
1. x <-4 and y<-x-7
The graph of this system is attached as a below as Graph 1.
In the graph, red represents x <-4 and green represents y<-x-7.
Possible solution
Putting x=-4 in y=-x-7, we get
y=-(-4)-7
y=-3
So, the solution of the system is (-4,-3).
2. y<-3x-8 and y>5x+8
The graph of this system is attached as a below as Graph 2.
In the graph, red represents y<-3x-8 and green represents y>5x+8.
Possible solution
Putting x=-2 in y=5x+8, we get
y=5(-2)+8
y=-10+8
y=-2
So, the solution of the system is (-2,-2).
Hence, the possible solutions are (-4,-3) and (-2,-2) respectively.
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what is 1/13 of 18 as a proper fraction
Answers
Answer:
Step-by-step explanation:
1/13 x 18
of= multiply
18x1=18
13x1=13
18/13
As a PROPER FRACTION, it is 1 5/13
Answer: 18/13
Step-by-step explanation:
You have to multiply the fractions.
The height of a kicked ball can be modeled by the quadratic function h = - 0.01x^2 + 1.18x + 2. The horizontal distance traveled by the ball in feet is represented by x, and h is the height of the ball in feet. Approximately how far does the ball travel horizontally by the time it hits the ground?
Answers
The horizontal distance travelled by the ball when it hits ground is 119.67 feet
What is an equation?An equation is an expression composed of variables and numbers linked together by mathematical operations.
Let x represent the horizontal distance traveled by the ball and h represent the height of the ball. Given that:
h = -0.01x² + 1.18x + 2
The ball hits the ground when h = 0, hence:
-0.01x² + 1.18x + 2 = 0
x = 119.67
The horizontal distance is 119.67 feet
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the copeland family started out on a family vacation with plans to visit several states. first, mr. copeland drove 163 miles in 3 hours and 49 minutes. then, mrs. copeland took over, driving 411 miles in 6 hours and 27 minutes. what is the family's average speed so far?
Answers
The average speed so far is 226.4 miles per hour.
Time taken: 3 hours 49 minutes + 6 hours 27 minutes
= 10 hours 16 minutes
Total distance: 163 miles + 411 miles
= 574 miles
Average speed: 574 miles / (10 hours 16 minutes)
= 226.4 miles per hour
To calculate the average speed of the Copeland family's trip so far, we need to know the total distance they have traveled and the total time they have spent traveling. We can calculate this by adding the distance driven by Mr. Copeland (163 miles) and the distance driven by Mrs. Copeland (411 miles) to get a total distance of 574 miles. Then, we can add the time taken by Mr. Copeland (3 hours 49 minutes) and the time taken by Mrs. Copeland (6 hours 27 minutes) to get a total time of 10 hours 16 minutes. We can then divide the total distance (574 miles) by the total time (10 hours 16 minutes) to get an average speed of 226.4 miles per hour.
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plot the point (6,0).
Answers
Answer:
Check Attached Picture
Step-by-step explanation:
x coordinate equals 0
Y coordinate equals 6
plotted on coordinate plane attached
*drew it wrong the first time sorry
Answer:
Step-by-step explanation:
In order to plot the point, you would need to understand how coordinates work. So, the base of a coordinate is (x,y), meaning you would move your point along the x-axis by 6 units, and along the y-axis by 0 units. This would mean that on your grid, your point would be on the x-axis line (because moving 0 units just means you don't move it along that axis) and it would rest at the number 6.
Dr. Jimenez found that after applying an antibiotic to bacteria, he observed only 90% of the bacteria left in the culture dish each hour. If the initial bacteria count was 100, what was the bacteria count after 5 hours? Round to the nearest whole number
Answers
Step-by-step explanation:
one way of simply calculating this is by using basic percentage calculations.
So because 90% of bacteria was left after every hour, one could use the intial number we were given to find out the next bacteria count. You could work it out by :
in the first hour; 90/100 ×100= 90so in the 1hr the bacteria count was 90.
so you continue working it out for each hr
2nd hr; 90/100×90=81then work it out until u hve calculated for 5hrs, so the answers for each hr will be 90, 81, 72.9, 65.61, 59.049
then add them up and it will give you 368.559 bacteria count. When rounded off it will be 369.
thats how i would hve tackled it
The bacteria count after 5 hours was found to be 59.
For this case we have a function of the form:
y = A × ([tex]b^{x}[/tex]) < br/ >
Where,
A - the initial amount of bacteria
b - decrease rate
x - time in hours
Substituting values we have in the above form, we get:
y = 100 × [tex](0.90)^{x}[/tex] < br/ >
Then after 5 hours we have the equation,
y = 100 × [tex](0.90)^{x}[/tex] < br/ > < br/ > y = 59.049 < br/ >
Rounding to the nearest whole number the equation becomes,
y = 59 < br/ >
Therefore, the bacterium count after 5 hours was found to be 59.
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Ms. Leah learned typing in 6th grade, so she's a super fast typer. She can type 186 words in 3 minutes. Mr. Thomas challenged her saying "I can type faster than you without looking down at the keyboard", his typing speed was 310 words in 5 minutes. Who is the faster typer? Show your work and explain your reasoning.
Answers
Answer:
They both type at the same rate.
Step-by-step explanation:
Ms. Leah's unit rate
186/3 = 62 She can type 62 words in 1 minute
Mr. Thomas's unit rate:
310/5 = 62 He can type 62 words in 1 minute.
two players, a and b, alternatively toss a fair coin (a tosses the coin first, then b tosses the coin, then a , then b .. .). the sequence o f heads and tails is recorded. i f there is a head followed by a tail (ht subsequence), the game ends and the person who tosses the tail wins. what is the probability that a wins the game?
Answers
When two players A and B alternately flip a fair coin, the probability E(T) is 4. (A tosses the coin first, then B tosses the coin, then A, then B and so on).
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.
Two players, A and B, turn a fair coin in succession (A tosses the coin first, then B tosses the coin, then A, then B and so on). The order of the heads and tails is noted. If there is a head followed by a tail, the game is done, and the person who throws the tail wins (HT sub-sequence).
We must ascertain the game's estimated duration. Allow T coin tosses for the game to proceed. Find E (T).
[tex]E(T) = first instance of HT in seriesE(T) =0.5×(1+2)+0.5×(1+E(T))\\0.5×E(T)=0.5×4\\E(T) =4[/tex]
As a result, when two players A and B alternately flip a fair coin, The E(T) is 4. (A tosses the coin first, then B tosses the coin, then A, then B and so on).
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You need 3 sticks of butter for every 24cookies you bake.
Complete the table using equivalent ratios.
Sticks of butter Number of cookies
3 24
?
16 ?
5 ?
Answers
The table formed using equivalent ratios.
16 : 128
5 : 40.
Explain the term equivalent ratios?When we compare two ratios, they are said to be equivalent. To determine whether two or more ratios are equivalent, they can be compared to one another. For instance, 1:2 and 2:4 have the same ratio.3 sticks of butter -----> 24 cookies.
Let the number of cookies made for other stick of butter be 'y'.
Then, number cookies for the 16 sticks of butter
3/24 = 16/ y
y = 16*24 / 3
y = 128 cookies.
Again, number cookies for the 5 sticks of butter
3/24 = 5/ y
y = 5*24 / 3
y = 40 cookies.
Thus, number of cookies made by 5 sticks of buter are 40.
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the edge of a cube is increasing a tthe uniform rate of .2 inches per second. at the instant when the total surface area becomes 150 square inches, what is the rate of increase, in cubic inches per second, of the volume of the cube.
Answers
The rate of increase of the volume of the cube is 0.8 cubic inches per second.
Let x denote the edge of the cube at any given instant.
The total surface area of the cube
= 6x^2
The given condition is: 6x^2 = 150
=> x^2 = 25
=> x = 5
Now, the rate of increase of the edge of the cube is 0.2 inches/second.
Therefore, the rate of increase of the volume of the cube = rate of increase of the edge * rate of increase of the edge * rate of increase of the edge
=> 0.2 * 0.2 * 0.2
= 0.008 inches^3/second
= 0.8 cubic inches/second
The rate of increase of the volume of the cube is 0.8 cubic inches per second, which is calculated by multiplying the rate of increase of the edge (0.2 inches/second) three times.
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Below is a multiple correlation table. Based on the correlation values, which predictor would lead to the least prediction error in predicting happiness using simple regression
Answers
From the correlation table , based on the correlation values , then the predictor that would lead to least prediction error in predicting happiness using simple regression is stats class .
What is Predictor Variable ?
The predictor variable is used to predict the future outcome based on some given circumstances. The Other names by which predictor variable is known as "criterion variable" and "explanatory variable" .
the best predictor from the given correlation table is the highest value in the table ; irrespective of the sign .
We have to predict happiness using the simple regression ;
So to find the predictor , we select the row in the happiness row ,
we can see that the biggest value for the happiness row is 0.41 , which is the stats class .
Therefore , The predictor that lead to least prediction error is Stats Class .
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Use the long division method to find the result when
2
x
3
−
5
x
2
−
9
x
+
18
2x
3
−5x
2
−9x+18 is divided by
x
+
2
x+2
Answers
Answer:
2x^2 + x + 9 + (18/(x+2))
Step-by-step explanation:
To find the result when 2x^3 - 5x^2 - 9x + 18 is divided by x + 2 using the long division method, you can follow these steps:
Divide the first term of the dividend (2x^3) by the first term of the divisor (x). The result is 2x^2.
Multiply the divisor (x + 2) by 2x^2. The result is 2x^3 + 4x^2.
Subtract this result from the dividend (2x^3 - 5x^2 - 9x + 18). The result is -x^2 - 9x + 18
Bring down the next term of the dividend (-5x^2) and add it to the result from step 3. The result is -6x^2 - 9x + 18
Divide -6x^2 by -6x and the result is x.
Multiply the divisor by x. The result is x^2 + 2x
Subtract this result from the result of step 4. The result is -9x + 18
Bring down the next term of the dividend (-9x) and add it to the result from step 7. The result is -18x + 18
Divide -18x by -18 and the result is x
Multiply the divisor by x. The result is x^2 + 2x
Subtract this result from the result of step 8. The result is 18
Therefore, the quotient is 2x^2 + x + 9 and the remainder is 18
So the result when 2x^3 - 5x^2 - 9x + 18 is divided by x + 2 is 2x^2 + x + 9 + (18/(x+2))
For positive integers N and k, define N to be k-nice if there exists a positive integer a such that a k has exactly N positive divisors. Find the number of positive integers less than 1000 that are neither 7-nice nor 8-nice.
Answers
The number of positive integers less than 1000 that are neither 7-nice nor 8-nice is 749.
N = (ke1 + 1)(ke2 + 1)· · ·(kei + 1).
This means we must have N ≡ 1 (mod k).
Yes, choose a = 2^N−1/k so that
a^k = 2^N−1
, which has N divisors.
So, we need to find the number of integers that are neither 1 mod 7
nor 1 mod 8.
We can use the principle of inclusion and exclusion.
There are [999/7]= 143 integers that are 1 mod 7.
There are [999/8]= 125 integers that are 1 mod 8.
There are [999/56 ]= 18 integers that are 1 mod 56.
By PIE, the answer is 999 − 143 − 125 + 18 = 749.
Zero, a positive natural number, or a negative integer denoted by a minus sign are all examples of integers. The inverse additives of the equivalent positive numbers are the negative numbers. The boldface Z is a common way to represent the set of integers in mathematical terms.
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The tennis team is selling tickets to a car wash for $6. When they do not sell very many tickets, the team decreases the price 25%. If the team sold 4 tickets at regular price and 10 tickets at the discounted price, how many did the team make in sales?
Answers
Answer:
4/7
Step-by-step explanation:
=> The simplest form of
56
:
98
56:98 is
4
:
7.
4:7.
Step-by-step explanation:
Given ratio -
56
:
98
56:98
We have to reduce it to its simplest form,
For that, we have to find the GCD of the numerator as well as the denominator:
So, the GCD for
56
56 and
98
98 is
14.
14.
Now, divide both the numerator and denominator by the GCD:
=
>
56
÷
14
98
÷
14
=>
98÷14
56÷14
=
>
4
7
=>
7
4
Hence, the simplest form is
4
:
7.
4:7.
for women aged 18-24 systolic blood pressured are normally distributed with a mean of 114.8 and a standard deviation of 13.1 if 23 women aged 18-24 are randomly selected find the probability that their mean
Answers
The probability that the mean systolic blood pressure of 23 women is between 119 and 122 mm Hg is 0.0579.
The Central Limit Theorem states that the distribution of the mean of a large sample (n>30) taken from a population with a finite mean and standard deviation will be approximately normal.
Since we are given that systolic blood pressures are normally distributed and we have n = 23>30, we can assume that the mean systolic blood pressure of 23 women will be approximately normally distributed with a mean of 114.8 mm Hg and a standard deviation of 13.1/[tex]\sqrt{23}[/tex] = 2.731 mm Hg.
To find the probability that the mean systolic blood pressure of 23 women is between 119 and 122 mm Hg, we can standardize the problem and use the standard normal distribution table.
We can standardize the problem by finding the number of standard deviations away from the mean of the lower and upper bounds of the range.
z_lower = (119 - 114.8) / 2.731) = 1.537
z_upper = (122 - 114.8) / 2.731) = 2.636
Now we can use the standard normal distribution table to find the probability that a standard normal variable is between z_lower and z_upper.
P(z_lower < Z < z_upper) = P(Z ≤ 2.636) - P(Z < 1.537) = 0.9958 - 0.9379 = 0.0579
Therefore, the probability that the mean systolic blood pressure of 23 women is between 119 and 122 mm Hg is 0.0579.
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The complete question is -
For women aged 18-24, systolic blood pressures are normally distributed with a mean of 114.8 mm Hg and a standard deviation of 13.1 mm Hg. If 23 women aged 18-24 are randomly selected, find the probability that their mean systolic blood pressure is between 119 and 122 mm Hg. Round to four decimal places.
For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 45N acts on a certain object, the acceleration of the object is 9 m/s^2. If the acceleration of the object becomes 8 m/s^2, what is the force?
Answers
Answer:
Step-by-step explanation:
4 m/s squared
A department store buys 100 shirts at a cost of $1,200 and sells them at a selling price of $29 each. Find the percent markup
Answers
Answer:
To find the percent markup, we can use the following formula:
Markup = (selling price - cost price) / cost price * 100
We know that the department store buys 100 shirts at a cost of $1,200 and sells them at a selling price of $20 each.
Markup = ($20 - $12) / $12 * 100
Markup = $8 / $12 * 100
Markup = 2/3 * 100
Markup = 67%
So the percent markup is 67%.
given $r(-6, 19)$ and $s(15, -5)$, what are the coordinates of the point on segment $\overline{rs}$ two-thirds of the distance from $r$ to $s$?
Answers
(8, 3) is the point that is two-thirds segment of the way from point $r$ to point $s$, we can use the following method:
initially to get the difference between the x-coordinates of points $r$ and $s$, and multiply the values by 2/3. let us consider that value as $dx$.
and to get the difference between the y-coordinates of points $r$ and $s$, and multiply it by 2/3. let us assume the value as $dy$. then add $dx$ to the x-coordinate of point $r$ and $dy$ to the y-coordinate of point $r$.on doing certain operations we get as:
hence the coordinates of the point at two-thirds of the way from $r$ to $s$ is $(x,y)$ can be established as
x = -6 + (15 - (-6))(2/3) = -6 + 21(2/3) = -6 + 14 = 8
y = 19 + (-5 - 19)(2/3) = 19 - 24(2/3) = 19 - 16 = 3
therefore the point two-thirds of the distance from point $r$ to point $s$ is (8, 3).
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Which property would be used to isolate 2x on the left side of the inequality 2x+4≥6 ?
Answers
Answer:
Step-by-step explanation:
+1=2
grayson is designing a new board game, and is trying to figure out all the possible outcomes. how many different possible outcomes are there if he spins a spinner with three equal-sized sections labeled walk, run, stop, spins a spinner with 5 equal-sized sections labeled monday, tuesday, wednesday, thursday, friday, and rolls a fair die in the shape of a cube that has six sides labeled 1 to 6?
Answers
Using the Fundamental Counting Theorem, it is found that 6 different possible outcomes are there.
What is the fundamental principle of counting?
The total number of times an event can occur is m n if there are m possible ways for one event to happen and n various ways for another. A rule used to determine the total number of potential outcomes in a circumstance is known as the fundamental counting principle.
It states that there are n m times m n times m methods to do both of these activities if there are n ways to perform one action and m ways to perform another action after that.
For the coin, there are two outcomes, hence . n₁ = 2
For the spinner, there are three outcomes, hence n₂ = 3
Then, the number of outcomes is given by:
N = 2 x 3 = 6.
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PLEASE HELP QUICKKKKKKK!
Answers
The true statement is t = 2 years.
What is simple interest?
Simple interest is calculated based on a loan's principal or the initial deposit into a savings account. Simple interest doesn't compound, therefore a creditor will only charge interest on the principal sum, and a borrower will never be required to pay further interest on the interest that has already accrued.
Here, we have
Given: suppose you deposited $400 in a saving account 2 years ago.
The simple interest rate is 2.5%. The interest you earned in those 2 years is $18.40.
We have to find the true statement.
We concluded that
I = 2.5%
P = $400
t = 2 years
Hence, the true statement is t = 2 years.
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an individual is hosting a cookout for a kick ball team. the individual wants to have 3 hot dogs for each guest, and 10 extra hot dogs in case some teammates bring friends. which variable is dependent?
Answers
The dependent variable in this case would be the total number of hot dogs needed for the cookout.
What is variable in math?In mathematics, a variable is a symbol, usually a letter, used to represent a quantity in an equation or in a mathematical expression. It can be thought of as a placeholder that can take on different values in a given equation or expression. Variables are essential for mathematics because they allow us to explore different scenarios and solve problems.
This is dependent on the number of guests attending, which is the independent variable. Depending on how many people show up, the individual will need to adjust the amount of hot dogs to accommodate the guests.
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Rajesh inherited an investment account with a current balance of 30,000. it compounds monthly with a rate of 9.48%. He has made arrangements to withdraw $250 automatically every month to pay off his 10-year student loan. Will Rajesh have enough money in the account to cover all of the required loan payments?
Answers
Answer:
Step-by-step explanation:
Assuming the interest rate remains constant throughout the 10-year period, Rajesh will have enough money in the account to cover all of the required loan payments. The total amount of money he will withdraw over the 10-year period will be $30,000 (250 x 12 months x 10 years). At the end of the 10-year period, he will have $50,847.90 in the account, which is more than enough to cover the required loan payments.
