Answer:
Diameter of the circle = 2√13
Step-by-step explanation:
The radius is calculated by using the formula for calculating the distance between the two points as shown;
R = √(y2-y1)²+(x2-x1)²
Given the coordinates (0, 2) and (3,4)
R = √4-2)²+(3-0)²
R = √2²+3²
R = √4+9
R = √13
Diameter = 2R
Diameter of the circle = 2√13
the data set in ceosal2 contains information on chief executive officers for u.s. corporations. the variable salary is annual compensation, in thousands of dollars, and ceoten is prior number of years as company ceo. find the average salary and the average tenure in the sample. how many ceos are in their first year as ceo (that is, ceoten
After calculation, the average salary is 865.8644 thousands of dollars and average tenure is 7.955 years. Number of CEOs who are in their first year as CEO is equal to 5.
Here are the steps in R Studio to perform the tasks:
(a) Finding the average salary and the average tenure in the sample:
Load the CEOSAL2 data set in R Studio using the read.csv function.
ceos <- read.csv("CEOSAL2.csv")
Calculate the average salary using the mean function:
average_salary <- mean(ceos$salary)
Calculate the average tenure using the mean function:
average_tenure <- mean(ceos$ceoten)
(b) Finding the number of CEOs in their first year as CEO and the longest tenure as CEO:
Use the sum function and a logical test to count the number of CEOs in their first year as CEO:
first_year_ceos <- sum(ceos$ceoten == 0)
Use the max function to find the longest tenure as CEO:
longest_tenure <- max(ceos$ceoten)
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A video game store uses a markup rate of 40% on a shipment of video games. The store paid $24 for each video game in the shipment. What is the retail price of each video game?
The retail price of each video game is $33.6
How to determine the retail price of each video game?From the question, we have the following parameters that can be used in our computation:
Markup rate = 40%
Amount paid = $24
The retail price of each video game can be calculated using the following equation
Retail price = Amount paid * (1 + Markup rate)
Substitute the known values in the above equation, so, we have the following representation
Retail price = 24 * (1 + 40%)
Evaluate
Retail price = 33.6
Hence, the retail price is $33.6
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6(2x²-5) = [?]
x = -3
Answer:
Below
Step-by-step explanation:
Put ' - 3' into the equation where 'x' is and compute
6 ( 2(-3)^2 -5) =
6 ( 2*9 -5)
6 ( 18-5)
6(13) = 78
Solve the following problem, asked of Marilyn Vos Savant in the "Ask Marilyn" column of Parade Magazine, February 18, 1996. Say I have a wallet that contains either a $2 bill or a $20 bill (with equal likelihood), but I don’t know which one. I add a $2 bill. Later, I reach into my wallet (without looking) and remove a bill. It’s a $2 bill. There’s one bill remaining in the wallet. What are the chances that it’s a $2 bill?
The probability that the remaining bill is a $2 bill is approximately 0.2857 or 28.57%.
To solve this problem, we can use conditional probability. Let's denote the events as follows:
A: The wallet initially contains a $2 bill.
B: The wallet initially contains a $20 bill.
C: The bill drawn from the wallet is a $2 bill.
We want to find the probability of Provenience is the horizontal and vertical position of an artifact within the matrix. A occurring given that event C has occurred, P(A|C).
To begin, let's analyze the given information:
- The wallet either contains a $2 bill or a $20 bill, with equal likelihood. So, P(A) = P(B) = 0.5.
- If the wallet initially contains a $2 bill (event A), the probability of drawing a $2 bill (event C) is 2/3, since there are two $2 bills and one $20 bill in the wallet.
- If the wallet initially contains a $20 bill (event B), the probability of drawing a $2 bill (event C) is 1/2, as there is only one $2 bill left in the wallet.
Now, let's calculate the probability using Bayes' theorem:
P(A|C) = (P(C|A) * P(A)) / P(C)
P(C|A) = 2/3 (probability of drawing a $2 bill given that the wallet initially contains a $2 bill)
P(C) = P(C|A) * P(A) + P(C|B) * P(B) (total probability of drawing a $2 bill)
P(C|B) = 1/2 (probability of drawing a $2 bill given that the wallet initially contains a $20 bill)
P(C) = (2/3 * 0.5) + (1/2 * 0.5) = 1/3 + 1/4 = 7/12
P(A|C) = (2/3 * 0.5) / (7/12)
= 4/6 / 7/12
= (4/6) * (12/7)
= 2/7
Therefore, the chances that the remaining bill in the wallet is a $2 bill, given that a $2 bill was drawn, is 2/7 or approximately 0.2857 (or 28.57%).
So, the probability that the remaining bill is a $2 bill is approximately 0.2857 or 28.57%.
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Can someone help me out?
Answer:
I think its AM not sure tho
Step-by-step explanation:
a. If the pediatrician wants to use height to predict head circumference dete variable is the explanatory variable and which is response variable. b. Draw a scatter diagram of the data. Draw the best fit line on the scatter diagram . d. Does this scatter diagram show a positive negative, or no relationship between a child's height and the head circumference ?
If the best fit line is nearly horizontal, it suggests no significant relationship between height and head circumference.
What is the equation to calculate the area of a circle?In this scenario, the explanatory variable is the child's height, as it is being used to predict the head circumference.
The response variable is the head circumference itself, as it is the variable being predicted or explained by the height.
To draw a scatter diagram of the data, you would plot the child's height on the x-axis and the corresponding head circumference on the y-axis. Each data point would represent a child's measurement pair.
Once all the data points are plotted, you can then draw the best fit line, also known as the regression line, that represents the overall trend or relationship between height and head circumference.
By observing the scatter diagram and the best fit line, you can determine the relationship between a child's height and head circumference.
If the best fit line has a positive slope, it indicates a positive relationship, meaning that as height increases, head circumference tends to increase as well.
If the best fit line has a negative slope, it indicates a negative relationship, meaning that as height increases, head circumference tends to decrease.
By assessing the slope of the best fit line in the scatter diagram, you can determine whether the relationship between height and head circumference is positive, negative, or nonexistent.
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in which number is the value of the ten 7 ten times the value of the 7 in the number 1,273
Answer:
700
Step-by-step explanation:
The '7' in the number 1273 ..it is in the second place which represents 'tens' so it is equal to '70' ten times this amount would be 700. If you have a list of numbers to choose from.....choose one with the '7' in the THIRD position.
I need the answer ASAP.
Answer:
x = 60
Step-by-step explanation:
∠ FGC = ∠ AGE = 30° ( vertical angles )
BGD is a straight angle so the 3 angles lying on it sum to 180, that is
x + 30 + 90 = 180
x + 120 = 180 ( subtract 120 from both sides )
x = 60
Joe is trying to solve the equation for x
3x – 7 = 30
What would be the best first step Joe could Make to solve the equation?
A. Divide 3X by 3
B. Divide both sides by 30
C. Subtract 7 from the left side of the equation
D. Add 7 to both sides of the equation
Answer:
Step-by-step explanation:
D Add 7 to both sides
This makes it 3x=37
x=37/3
The table gives the annual global plastic production over time, in years, since 1960.
Fit an exponential model to this data.
The exponential model indicates that plastic production has (1) _____ per year. The model predicts that plastic production 15 years after 1960 was closest to (2) _____ million metric tons. Because the correlation coefficient indicates (3) _____
correlation between the model and the data, this prediction (4) _____.
Answer options:
1-
increased by 4.9 metric tons
decreased by 4.9 metric tons
increased by 4.9%
decreased by 4.9%
2-
40
60
70
3-
moderate
strong
weak
4-
is unreliable
can be accepted with confidence
The exponential model indicates that plastic production has increased by 4.9% per year.
Fit an exponential model to this dataThe exponential model indicates that plastic production has increased by 4.9% per year.The model predicts that plastic production 15 years after 1960 was closest to 70 million metric tons.Because the correlation coefficient indicates strong correlation between the model and the data,this prediction can be accepted with confidence.The exponential model is a powerful tool for predicting future trends in plastic production, and it indicates that plastic production has been increasing at an annual rate of 4.9%.This is an important insight, as it can help us to anticipate the future of the industry.With this information, we can estimate that plastic production 15 years after 1960 was likely to be around 70 million metric tons.The strength of this prediction is supported by the correlation coefficient, which suggests a strong correlation between the model and the data.This suggests that the model is a good predictor of future plastic production, and that the prediction of 70 million metric tons is reliable.To learn more about the annual global plastic production over time refer to:
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If all questions answered and are correct I will give brainlessly
Answer:
13) 225
14) 289
15) 64
16) 8
What happens to the graph of f(x) when it is multiplied
by a number between - 1 and 0?
A supermarket display consists of boxes of cereal. The bottom row has 25 boxes. Each row has two fewer boxes than the row below it. The display has seven rows.
- Write and use a function to determine how many boxes are in the top row. Show your work.
- Use the appropriate formula to determine the number of boxes in the entire display. Show your work.
Find the seventh term of the geometric sequence from the given information. Express the term as an integer or simplified fraction.
a2 = -7 and r = 1/2
The seventh term of the geometric sequence is -7/32. The nth term of the sequence, a1 is the first term, r is the common ratio, and n is the position of the term
To find the seventh term of a geometric sequence, we can use the formula:
\(an = a1 * r^(n-1),\)
where an represents the nth term of the sequence, a1 is the first term, r is the common ratio, and n is the position of the term we want to find.
In this case, we are given a2 = -7 and r = 1/2.
Using the formula, we can find a1 by substituting n = 2:
a2 = a1 * (1/2)^(2-1).
We know that a2 = -7, so we can rewrite the equation:
-7 = a1 * (1/2)^1,
-7 = a1 * (1/2).
Now, let's solve for a1:
a1 = -7 * (2/1),
a1 = -14.
We have found that the first term, a1, is equal to -14.
Now, we can find the seventh term, a7, by substituting n = 7 into the formula:
a7 = (-14) * (1/2)^(7-1),
a7 = (-14) * (1/2)^6,
a7 = (-14) * (1/64),
a7 = -14/64,
a7 = -7/32.
Therefore, the seventh term of the geometric sequence is -7/32.
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School ends at 3:15 pm. The school provides after -school care for a maximum of 150 minutes after school ends. When is the latest time for pick up?
The latest time for pickup, found by converting the 150 minutes maximum time provided by the school, from minutes to hours is about 5:45 pm
How can minutes be converted into hours?Minutes can be converted into hours by dividing the number of minutes by 60, which is the number of minutes in an hour.
The time that school ends = 3:15 pm
The latest time for pick up after school care = 150 minutes after school ends
Therefore, the latest time for pick up after school care = 3:15 pm + 150 minutes
60 minutes = 1 hour
150 minutes = (1/60) × 150 = 2.5
The latest for pick up = 3:15 pm + 2.5 hours = 5:45 pm
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Algebra Piecewise functions!!!
Can someone help with number 1? I got some of it but I don’t know what to do next!
Answer:
f(7) = 16
Step-by-step explanation:
f(7)
Let x = 7
We use the first part of the function since 7 > 4
3(7) -5
21 -5
16
f(7) = 16
Test for the best ~ A major financial services company uses a set of pre-employment tests to evaluate potential employees before they are hired. All applicants sign a confidentiality agreement not to divulge any content from the tests, which has allowed the company to use the same tests over many years. The test scores are known to be normally distributed with a mean of 75.2.
In an effort to hire more talented employees, the company recently hired a recruiting firm to find better qualified applicants. A random sample of 24 applicants provided by the recruiting firm had a mean test score of 76.85 and a standard deviation of 9.3.
The company wants to determine if the mean test score for all applicants supplied by the recruiting firm is higher than the historical mean of 75.2.Round all calculated values to 4 decimal places as appropriate.
1. Which inference procedure should the company use?
A. Z confidence interval for a population proportion
B. Z test for one population proportion
C. Randomization test for the difference of two population proportions
D. 2 test of independence
E. t test for a population mean
2. Which set of hypotheses should the company use to answer the research question?
A. H0:x¯=76.85 vs. H:x¯>76.85
B. H0:=75.2 vs. H:≠75.2
C. H0:=75.2 vs. H:<75.2
D. H0:=75.2 vs. H:>75.2
1. The company should use a t-test for the population mean, as we are comparing the mean test score for the sample of applicants supplied by the recruiting firm to the historical mean of 75.2.
2. The set of hypotheses the company should use to answer the research question is: D. H0: μ = 75.2 vs. H1: μ > 75.2
1. The appropriate inference procedure for this scenario is the t-test for a population mean. This is because we are comparing a sample mean (76.85) to a known population mean (75.2) with a known sample standard deviation (9.3). So the correct answer is:
E. t-test for a population mean
2. The company wants to determine if the mean test score for applicants provided by the recruiting firm is higher than the historical mean of 75.2. Therefore, the null hypothesis (H0) should be that the mean test score is equal to 75.2, and the alternative hypothesis (H1) should be that the mean test score is greater than 75.2. The correct set of hypotheses is:
H0: μ = 75.2 (the historical mean)
Ha: μ > 75.2 (the mean for the sample of applicants supplied by the recruiting firm is higher).
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two point charges are placed on the x-axis as follows: charge q1 = 3.99 nc is located at x= 0.205 m , and charge q2 = 5.01 nc is at x= -0.302 m .
Two point charges, q1 = 3.99 nC located at x = 0.205 m and q2 = 5.01 nC at x = -0.302 m, are placed on the x-axis. The electric field and direction at a given point can be calculated using the principle of superposition.
The electric field at a point due to a point charge is given by Coulomb's law, E = kq/r^2, where E is the electric field, k is Coulomb's constant (8.99 x 10^9 Nm^2/C^2), q is the charge, and r is the distance between the point charge and the point where the electric field is being measured. To calculate the net electric field at a point due to multiple charges, we use the principle of superposition, which states that the total electric field at a point is the vector sum of the electric fields due to each individual charge.
In this case, we have two charges, q1 = 3.99 nC and q2 = 5.01 nC. The electric field at a point P on the x-axis, due to q1, can be calculated as E1 = kq1/r1^2, where r1 is the distance between q1 and point P. Similarly, the electric field at point P due to q2 can be calculated as E2 = kq2/r2^2, where r2 is the distance between q2 and point P. To find the net electric field at point P, we add the electric fields vectorially, E_net = E1 + E2.
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PLS HELP ME This IS HARD
Find the value of cos
�
H rounded to the nearest hundredth, if necessary.
Answer:
Step-by-step explanation:
Cos0 = adj/hyp
cos0 = 40/41
find the inverse cos of that.
0 = cos^-1(40/41)
0 = 12.68
Find the output, y, when the input, x, is 10.y=-3x+1
We are given the following function
\(y=-3x+1_{}\)We are asked to find the output y when the input x is 10
Simply substitute x = 10 into the function and solve for y
\(\begin{gathered} y=-3x+1_{} \\ y=-3(10)+1_{} \\ y=-30+1_{} \\ y=-29 \end{gathered}\)Therefore, the output y is -29 when the input x is 10
Can anyone pls help
Answer:
50
Step-by-step explanation:
if im thinking right
im SOO sorrYYy if its wrong
Is 99.04 greater than 99.040
of liters of water are enough to water of the plants in the house, how much water is necessary to water all the plants in the house? Write a multiplication equation and a division equation for the situation, then answer the question. Show your reasoning.
Answer:
2/5 x ? = 4/3?
4/3 / 2/5= ?
Quick method is quick change flip, Change the division sign into multiplication and switch the values in the denominator and numerator of the second fractiom
4/3 x 5/2 = 20/6
simplify to 10/3
x or ? = 10/3
written as a mixed number is is 3 1/3
Step-by-step explanation:
When parking next to a curb, you may not park more than:
When parking next to a curb, you may not park more than 12 inches away from the curb.
Curb parking refers to the practice of parking a car alongside the road, adjacent to the curb. It is a common method of parking in urban areas where designated parking spaces may be limited. When parking parallel to the road, vehicles are positioned with either the front or back bumper facing the direction of the road.
To ensure safe and efficient use of road space, there are regulations in place regarding curb parking. One important regulation is the requirement to park within a certain distance from the curb. In general, vehicles are not allowed to park more than 12 inches away from the curb.
The purpose of this regulation is to maintain an organized and orderly parking arrangement, allowing for the smooth flow of traffic and the safe passage of pedestrians. By parking close to the curb, vehicles minimize obstruction to other vehicles and ensure that the road remains clear for traffic.
It is essential for drivers to adhere to these parking regulations to avoid fines or penalties and to contribute to the overall safety and functionality of the road.
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The Basketball team sets a goal of having at least a 7:2 Win Loss Ratio. If they play 36 games in a season, how many games must they win to achieve their goal?
Airfare from Atlanta,GA to Nashville,TN was decreased from $250 to $180.By what percentage did the cost of the airfare change?
Answer:
percentage cost of airfare change= (difference in cost / original cost )×100
% age = (250-180/ 250) ×100
=70/250 ×100
7000/250
= 28%
A storage container leaks water at a rate of 14 gallons every 28 days.
What is the unit rate in gallons per week?
Enter your answer in the box. The units will be gal/week. Do not type the units.
Answer:
3.5
Step-by-step explanation:
28 days = 4 weeks
28 divided by 4 = 1 week
14 gallons divided by 4 = 3.5
a bag contains 3 blue, 5 red, and 7 yellow marbles. a marble is chosen at random. determine the theoretical probability expressed as a decimal rounded to the nearest hundredth. p(blue)
Answer:
p(blue) = 0.2
Step-by-step explanation:
A: "Pick 1 blue marble"
\(n(A)=C^{1}_3\) = 3
n(Ω) = \(C^{1}_{15}\) = 15
p(blue) = n(A)/n(Ω) = 3/15 = 0.2
The probability of selecting a blue marble is 0.20 expressed as a decimal.
To determine the theoretical probability of choosing a blue marble, follow these steps:
1. Count the total number of marbles in the bag: 3 blue + 5 red + 7 yellow = 15 marbles.
2. Identify the number of blue marbles: 3 blue marbles.
3. Calculate the probability of choosing a blue marble by dividing the number of blue marbles by the total number of marbles: 3 blue marbles / 15 total marbles.
4. Express this probability as a decimal by dividing 3 by 15: 3 ÷ 15 = 0.2.
5. Round the decimal to the nearest hundredth: 0.2 already falls at the hundredth place.
The theoretical probability of choosing a blue marble, expressed as a decimal rounded to the nearest hundredth, is 0.20 or simply 0.2.
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A. 3x – 1=7
B.3r = 8
1) How can we get Equation B from Equation A? help
Answer:
The answer is C.
Step-by-step explanation:
You add,, you don't multiply. Both A and B are not choices.
One of C or D is correct.
That r should be an x according to the attachment.
The answer is add 1 to both sides.
3x - 1 = 7
+1 +1
3x = 8
So you are adding 1 to both sides. The answer is C
1. What are the 3 conditions for a function to be continuous at xa? 2. the below. Discuss the continuity of function defined by graph 3. Does the functionf(x) = { ***
The three conditions for a function to be continuous at a point x=a are:
a) The function is defined at x=a.
b) The limit of the function as x approaches a exists.
c) The limit of the function as x approaches a is equal to the value of the function at x=a.
The continuity of a function can be analyzed by observing its graph. However, as the graph is not provided, a specific discussion about its continuity cannot be made without further information. It is necessary to examine the behavior of the function around the point in question and determine if the three conditions for continuity are satisfied.
The function f(x) = { *** is not defined in the question. In order to discuss its continuity, the function needs to be provided or described. Without the specific form of the function, it is impossible to analyze its continuity. Different functions can exhibit different behaviors with respect to continuity, so additional information is required to determine whether or not the function is continuous at a particular point or interval.
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