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yulyashka [42]
3 years ago
8

Find the missing side

Mathematics
2 answers:
sergejj [24]3 years ago
8 0
The correct answer is the fourth option, 72
ohaa [14]3 years ago
4 0

72 is the answer

Hope this helped!

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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
Find the area of the shaded region<br>No links or docs<br>lots of points and will mark BRAINLYEST ​
alexira [117]

Answer:

45 inch

Step-by-step explanation:

its just my guess don't take it serious

3 0
3 years ago
What is the answer to 30=-(7-x)?
Lemur [1.5K]

Step-by-step explanation:

x =  \frac{30}{7}

6 0
2 years ago
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Taylor works at a clothing store. her weekly salary is $900 in addition to Her salary, she earns 28% of the amount of her sales
LenaWriter [7]

Answer: $1243

Step-by-step explanation:

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3 years ago
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Yoooo somebody help!!!
Elenna [48]

Answer:105

Step-by-step explanation:

area of rectangle (b*h) (7*12)

Area of triangle 1/2 (b*h) 1/2(7*6)

Rectangle=84

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84+42= 105

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2 years ago
Read 2 more answers
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