Answer:
6a-18
Step-by-step explanation:
multiply by 6
6a-(6×3)
6a-18
=6a-18
Well the answer is 14 cm, because all you have to do is divide the length of LN in half
Using the z-distribution, it is found that a sample size of 3,385 is required.
<h3>What is a confidence interval of proportions?</h3>
A confidence interval of proportions is given by:
The margin of error is:
In which:
- is the sample proportion.
In this problem, we have a 98% confidence level, hence, z is the value of Z that has a p-value of , so the critical value is z = 2.327.
We have no prior estimate, hence is used, which is when the largest sample size is needed. To find the sample size, we solve the margin of error expression for n when M = 0.02, hence:
n = 3,385.
A sample size of 3,385 is required.
More can be learned about the z-distribution at brainly.com/question/25890103
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Answer:
y ≤ 1/2x + 5
Step-by-step explanation:
-3x + 6y ≤ 30
add 3x on both sides:
6y ≤ 3x + 30
divide 6 on both sides:
y ≤ 3/6x + 30/6
This is simplified to:
y ≤ 1/2x + 5