Answers
Answer:
it is B trust me I know what im doing
Answer:
-16x - 10
Step-by-step explanation:
-8x - 2(5+4x)
Multiply -2 by the numbers within the parenthesis:
-8x - 10 - 4x
Combine like terms:
-16x - 10
Related Questions
anyone help, please. CFA 8
S-IC.2: Decide if a specified model is consistent with results from a given data-generating process, e.g., using simulation.
A drug manufacturer claims that 13% of the population of South Africa is living with HIV. As a World Health Organization researcher, you collect evidence to test this claim. You use statistical techniques to sample 125 random residents of South Africa and find that 20 of them test positive for HIV.
You plan to simulate one sample of 125 residents by randomly selecting 125 integers between 1 and 100.
From your actual sample of 125 residents, what proportion of the sample has HIV? 125
What do the randomly selected numbers represent? Why did you pick 125 of them? The number of residents
What assigned numbers indicate a simulated resident has HIV?
2. You plan to run 100 simulations, each with a random sample of 125 residents.
What do you think the true mean population proportion from the 100 simulations would be close to? Explain why.
Is this a simulation of an observational study or an experimental study? Explain why.
The margin of error for this study is about 0.06 or 6% around the population proportion. Are you able to support the claim of the drug manufacturer? Explain why or why not.
What could be done to make the margin of error smaller and get a better sample of the population? Why does that make sense?
Answers
Answer:
gooooooooooooooooo
Step-by-step explanation:
goooooooooooooooooop
1) The proportion of the sample that has HIV is 0.16. 2) The randomly selected numbers represent the HIV status of the simulated residents.
1. The proportion of the sample that has HIV is 20 / 125 = 0.16.
2. The randomly selected numbers represent the HIV status of the simulated residents. We picked 125 of them because that is the sample size of the actual study.
We can assign the numbers 1 to 13 to represent the simulated residents who have HIV. This is because 13% of the population is estimated to have HIV.
I think the true mean population proportion from the 100 simulations would be close to 0.13, the HIV prevalence rate that was estimated in the actual study. This is because the simulations are randomly generated, and the probability of a simulated resident having HIV is 13%.
This is a simulation of an observational study. This is because the researchers are not intervening in the lives of the simulated residents. They are simply observing the HIV status of the simulated residents.
The margin of error for this study is 0.06, which is 6%. This means that the true population proportion of people with HIV could be anywhere between 0.07 and 0.19. The drug manufacturer's claim that 13% of the population has HIV is within this range, so we cannot definitively support or refute their claim.
To make the margin of error smaller and get a better sample of the population, we could increase the sample size. This would give us more data points to work with, which would make our estimate of the population proportion more accurate. Additionally, we could stratify the sample by age, gender, or other factors that could affect the prevalence of HIV. This would help us to ensure that our sample is representative of the entire population.
To learn more about proportion here:
https://brainly.com/question/32027272
#SPJ2
Factor completely
2x^2+7x+5
Answers
Answer:
(2x+5)(x+1)
Step-by-step explanation:
We look for two numbers which multiply to 10(that is 2×5) and add to 7. Our numbers are 2and 5
2×5=10 and 2+5=7
Therefore we have
(2x²+2x)+(5x+5)
2x(x+1)+5(x+1)
(2x+5)(x+1)
The difference of ten times a number and three is -13
Answers
Answer:
10n - 3 = -13
Step-by-step explanation:
Can sameone help me please
Answers
X intercept: (-2,0)
Y intercept: (0,5)
Have a wonderful and blessed day!
Answer:
The x-intercept is 2.
The y-intercept is 5.
Step-by-step explanation:
The x-intercept is basically finding what the value of x when y is 0; y-intercept is vise-versa.
The format it is currently in is not in y=mx+b form which makes you unable to put on a graph...HOWEVER, YOU ACTUALLY CAN!
You goal for these type of questions is to isolate y by itself.
[tex]-20x+8y=40\\8y=20x+40\\y=2.5x+5[/tex]
Your equation has been converted into y=mx+b which now can be used to easily find the x and y intercepts.
You can either look at a graph and find the x and y intercepts or do it algebraically.
Since, "x-intercept is basically finding what the value of x when y is 0", we plug in y with 0.
Solve for X-Intercept:
[tex]0=2.5x+5\\-5=2.5x\\-2=x[/tex]
X-Intercept is -2
Solve for Y-intercept:
[tex]y=2.5(0)+5\\y=5[/tex]
Y-Intercept is 5
PLEASE HELP! WILL GIVE BRAINLIEST!
Answers
Answer:
Answer is C
Step-by-step explanation:
Using SOH CAH TOA
I NEED HELP ASAP PLEASE
Order the numbers from least to greatest.
-5 1/2
-5.2
-5
-5/2
5.5
Answers
Answer:
Least to greatest: -5 1/2, -5.2, -5, -5/2, 5.5
Tell whether the relation is a function. Explain
Answers
“The difference of -5 and -11.”
Answers
Which step(s) would create equations so that the coefficients of one of the variables are
opposites?
(A) Multiply the first equation by 7.
Multiply the second equation by 3.
(B) Multiply the first equation by -2.
Multiply the second equation by 4.
(C) Multiply the first equation by 2.
(D) Multiply the second equation by 4.
Answers
The second equation would become 8x - 8y = -28, and the 8y from the first equation and the -8y from the second would cancel out and you can solve for x.
Use x for the unknown number.
Twice an unknown number added to 48 is six times the same unknown number.
Answers
Answer:
2x+48=6x
Step-by-step explanation:
Each exterior angle of the regular n-gon has a measure of 3 degrees. How many sides does the polygon have?
Answers
Answer:
8 sides for this one
Step-by-step explanation:
hope this helps
26. Which is NOT a zero of the following function?
f(x)= x + 3x? – X-3
A. 1
B. -1
C. 3
D. -3
Answers
Answer:
i think it is B i think im not too aure
What is the length of the line segment with endpoints (-1, -2) and (4, 10)?
Answers
Answer:
u smart biy
Step-by-step explanation:
Given M and N are whole numbers. Find the greatest value of the product M x N such that each of the following is true:
Answers
Answer:
8 and 9Step-by-step explanation:
Let's assume all the factors are different.
Then the product of lowest 5 factors is:
2*3*5*7*9 > 98If 2 of the factors are same and 3 are same, then the lowest ones:
2^3*3^2 = 72 < 983^3*2^2 = 108 > 98As we see the only option is N = 2^3 = 8 and M = 3^2 = 9
Answer:
92
Step-by-step explanation:
M is the prime number 23 (two factors are 1 and 23) and N is the square number 4 (factors are 1, 2, and 4). 23 x 4= 92
What is the approximate surface area of the sphere? Round to the nearest hundredth and use 3.14 for 7. Recall the
formula SA-4x7
Answers
Answer:
Option (3)
Step-by-step explanation:
Formula to get the surface area of a sphere is,
Surface area of a sphere = 4πr²
Here 'r' = Radius of a sphere
Since, r = 9 units and π = 3.14
Surface area of the sphere = 4(3.14)(9)²
= 1017.36 square ²units
Therefore, Option (3) will be the correct option.
Answer:
c
Step-by-step explanation:
on edge
A spinner that is equally divided into 6 sections and contains one yellow section is spun at the same time that a fair die is rolled. What is the probability that the spinner will land on the yellow section and the number rolled on the die will be 4?
Answers
Answer:
32%
Step-by-step explanation:
1/6=32%
A mail carrier travels at 15 miles per hour through a neighborhood. Which table
represents the distance the mail carrier travels in x hours?
2
G
H
0 1 3
yo 16 18
0 24
yo 30 55
x 135
y 15 45 75
x 134
y 15 40 55
Answers
Answer:
Step-by-step explanation:
the table is not copied correctly, I assume
the mail carrier will travel a distance of 15x
Solve the following quadratic equation.
(x - 16)2 = 256 The 2 is the exponent so please don't misunderstand it lol, thank you for who ever helps me.
A. x = 30 and x = 8
B. x = -30 and x = -8
C. x = -32 and x = 0
D. x = 32 and x = 0
Answers
Answer:
D. x = 32 and x = 0
Step-by-step explanation:
You can solve it a multitude of ways one of the easiest ways for me was the quadratic formula.
At Royston's favorite clothing store, the cost of a pair of jeans is $4 more than twice the cost of a shirt. The cost of a pair of dress pants is $2 less than 2.5 times the cost of a shirt. If the cost of a shirt is s dollars and Royston purchased 1 pair of jeans and 1 pair of dress pants, which expression represents the total amount he spent in terms of s?
Answers
Answer:
[tex]s^{2} 2.5 + 2[/tex]
Step-by-step explanation:
Answer:
4.5s+2
Step-by-step explanation:
mike moved 345 chairs and gavin moved c more than mike. How many chairs did Gavin move in terms of c?
Answers
Answer:
345 + C
Step-by-step explanation:
From the first sentence, we know that Mike moved a total of:
345chairs
In the second sentence, we know that Gavin moved C more chairs than Mike;
Mathematically;
Number of chairs moved by Galvin;
345 + C
Therefore, in terms of C, the number of chairs moved by Gavin is:
345 + C
Which is the best description for the graph?
O The graph is increasing everywhere.
O The graph is decreasing everywhere.
O The graph is increasing, then decreasing.
O The graph is decreasing, then increasing.
Answers
Please help!!! I need help
Answers
Answer:
Step-by-step explanation:
What the hell is that oh no I am not doing that
geometry :
find the measure of the exterior angle
Answers
Answer:
45
Step-by-step explanation:
i believe its 45 or 55
Answer:
92°
Step-by-step explanation:
(2x - 2)° = x ° + 45°
(2x - 2 - x)° = 45°
(x - 2)° = 45°
x - 2 = 45
x = 45 + 2
x = 47
(2x - 2)° = (2*47 - 2)° = (94 - 2)* = 92°
What is the slope of line that passes through the points (-3, 5) and (0, -1).
Answers
Answer:
[tex]m=-2[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (-3, 5)
Point (0, -1)
Step 2: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m.
Substitute [SF]: [tex]m=\frac{-1-5}{0+3}[/tex]Subtract/Add: [tex]m=\frac{-6}{3}[/tex]Divide: [tex]m=-2[/tex]Help please I don’t understand
Answers
Answer:
$52.00
if you need the difference, its $28.00
Answer:
$52
Step-by-step explanation:
ASAPPPPPPPPPPPPPPPPPPP
Answers
Answer:
B
Step-by-step explanation:
A=3.14*6^2
6*6=36
36*3.14= 113
144-113= 31 (aka 30.96)
side note- 144 is the area of the square
Answer:
[tex]B.30.96\ mm^2[/tex]
Step-by-step explanation:
[tex]We\ are\ given\ that,\\Side\ of\ the\ square=12\ mm\\Diameter\ of\ the\ circle=12\ mm\\First,\\Lets\ consider\ the\ square.\\As\ the\ area\ of\ a\ square=n^2\\The\ area\ of\ the\ given\ square=(12\ mm)^2\\Hence,\\The\ area\ of\ the\ given\ square=144\ mm^2\\Now,\\Lets\ consider\ the\ circle.\\As\ the\ diameter\ of\ the\ circle=12\ mm\\Radius\ of\ the\ circle=12/2=6\ mm\\Hence,\\As\ the\ Area\ of\ a\ circle=\pi r^2\\Area\ of\ the\ given\ circle=3.14*6*6\\[/tex]
[tex]Area\ of\ the\ given\ circle=113.04\ mm^2\\Now,\\As\ the\ Area\ of\ the\ Square - Area\ of\ the\ Circle\ is\ the\ Shaded\ Region,\\144-113.04= Area\ of\ the\ Shaded\ Region\\Hence,\\Area\ of\ the\ Shaded\ Region=30.96\ mm^2[/tex]
which list shows the temperatures in order from coldest to warmest in degrees fahrenheit? HELP ME PLSSS I NEED THIS SOON
Answers
Answer:
Step-by-step explanation:
The answer is C
(づ｡◕‿‿◕｡)づ
Hope it helps
There are 40 marbles in a bin and 25% of the marbles are red how many in the bin are red
Answers
25% of 40=10
Answer:
10 marbles
Step-by-step explanation:
25% * 40= 1000
1000/100=10
=10 marbles
Solve – 4y – 10 = 4(y - 3)
Answers
Answer:
y= 1/4
Step-by-step explanation:
Answer:
y=-7/8
Step-by-step explanation:
-4y-10=4y-3
add 10 on both sides
-4y=4y+7
subtract the four on the right from both sides
-8y=7
divide -8 on both sides
answer: -7/8
I need help with my math homework
Answers
Answer:
See below, sorry for taking so long
Step-by-step explanation:
1.
A. Slope is rise over run or y2 - y1 divided by x2 - x1
We have (-5, 1) and (-3, 7)
7 - 1 / -3 - (-5)
6 / -3 + 5
6 / 2 = 3
Slope = 3
B. So point slope form is y - y1 = m(x - x1)
We know the slope so:
y - 1 = 3(x - (-5))
C. Using the point slope we can move things around to get slope-intercept:
y - 1 = 3(x + 5)
y - 1 = 3x + 15
y - 1 + 1 = 3x + 15 + 1
y = 3x + 16
D. Standard form is Ax + By = C:
y = 3x + 16
y - y = 3x + 16 - y
0 = 3x + 16 - y
0 - 16 = 3x + 16 - y - 16
-16 = 3x - y
3x - y = -16