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diamong [38]
3 years ago
15

PLEASE HELP WILL MARK BRAINLIEST

Mathematics
2 answers:
DiKsa [7]3 years ago
6 0
The answer is b , I’m pretty sure , but sorry if u get it wrong <3
Finger [1]3 years ago
4 0

Answer:

figure ll only

Step-by-step explanation:

You might be interested in
Find the equation of the circle with center at (3,-2) and radius of 3.
AURORKA [14]

Answer:

The equation of the circle is (x - 3)² + (y + 2)² = 9

Step-by-step explanation:

The form of the equation of a circle is (x - h)² + (y - k)² = r², where

  • h is the x-coordinate center of the circle
  • k is the y-coordinate of the center of the circle
  • r is the radius of the circle

∵ The center of a circle is (3, -2)

∴ x-coordinate of the center is 3

∴ y-coordinate of the center is -2

∴ h = 3 and k = -2

∵ The radius of the circle is 3

∴ r = 3

→ Substitute them in the form of the equation above

∵ (x - 3)² + (y - -2)² = (3)²

∴ (x - 3)² + (y + 2)² = 9

∴ The equation of the circle is (x - 3)² + (y + 2)² = 9

3 0
3 years ago
Can someone help me with these questions thanks
Alexxx [7]
First one is
2x where x equals number of people in your class

second one is
money saved = 1/2y+6 where y equals amount of money in pay check
5 0
4 years ago
Hey make this stuff free
Rainbow [258]

Answer:what lololololololololol

8 0
3 years ago
Read 2 more answers
Solve by elimination:<br> 4x + 4y = 4
ra1l [238]

Answer:

x=−y+1

Step-by-step explanation:

Let's solve for x.

4x+4y=4

Step 1: Add -4y to both sides.

4x+4y+−4y=4+−4y

4x=−4y+4

Step 2: Divide both sides by 4.

<u>4x      </u>  =    <u>−4y+4</u>

4          =        4

x=−y+1

Hope this helps ~

7 0
3 years ago
The brand manager for a brand toothpaste must plan a campaign designed to increase brand recognition. He wants to first determin
bulgar [2K]

We need to find out how many adults must the brand manager survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage.

From the given data we know that our confidence level is 90%. From Standard Normal Table we know that the critical level at 90% confidence level is 1.645. In other words, Z_{Critical}=1.645.

We also know that E=5% or E=0.05

Also, since, \hat{p} is not given, we will assume that \hat{p}=0.5. This is because, the formula that we use will have \hat{p}(1-\hat{p}) in the expression and that will be maximum only when \hat{p}=0.5. (For any other value of \hat{p}, we will get a value less than 0.25. For example if, \hat{p} is 0.4, then 1-\hat{p}=0.6 and thus, \hat{p}(1-\hat{p})=0.24.).

We will now use the formula

n=(\frac{Z_{Critical}}{E})^2\hat{p}(1-\hat{p})

We will now substitute all the data that we have and we will get

n=(\frac{1.645}{0.05})^2\times0.5(1-0.5)

n=(32.9)^2\times0.25

n=270.6025

which can approximated to n=271.

So, the brand manager needs a sample size of 271

3 0
3 years ago
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