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Andreyy89
3 years ago
5

Part A: Solve P = 4a for a. Show your work. (4 points) Part B: Solve 3c − 5f = 55 for f. Show your work. (6 points)

Mathematics
1 answer:
sergiy2304 [10]3 years ago
5 0
Since we have two unknowns in both equations, the solution will still consists the known.
For the part A
P=4a,
Dividing both sides by 4,
P/4 =a
Therefore, a = P/4

Part B:
3c - 5f = 55
Add 5f on both sides of the equation,
3c-5f+5f=55+5f
3c=55+5f
Now subtract 55 on both sides
5f = 3c - 55
Divide both side of the equation by 5 to get f,
5f/5 = (3c-55)/5
f = (3/5)c - 11
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95% confidence interval for the mean μ is (6,14)

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Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given random sample 'n' = 1200

95% confidence interval for the mean μ is determined by

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95% of confidence intervals are

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3 years ago
Find the critical value of t for a sample size of 23 and a 99% confidence level. choose the correct value from below:
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Alpha for one tailed test is 0.01/2 = 0.005.

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the correct answer is 94 square cm

Step-by-step explanation:

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