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Paha777 [63]
3 years ago
14

The area of a circle is 16 cm What is the circle's circumference?

Mathematics
1 answer:
alukav5142 [94]3 years ago
8 0
I believe that is 8 cm
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If f(x)=5x-2 and g(x)=2x1 find (f+g)(x)
kondaur [170]

Answer:

D

Step-by-step explanation:

5x-2+2x+1

5x+2x+1-2

7x-1

3 0
2 years ago
Christopher spends a total of $235.94. He purchases shoes for $80 as well as several sweaters. If each sweater was $25.99, how m
Xelga [282]

$235.94 - 80 = 155.94

155.94 ÷ 25.99 = 6

He bought 6 sweaters

6 0
3 years ago
4)In order to set rates, an insurance company is trying to estimate the number of sick daysthat full time workers at an auto rep
bagirrra123 [75]

Answer:

A sample of 18 is required.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.92}{2} = 0.04

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.04 = 0.96, so Z = 1.88.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

A previous study indicated that the standard deviation was 2.2 days.

This means that \sigma = 2.2

How large a sample must be selected if the company wants to be 92% confident that the true mean differs from the sample mean by no more than 1 day?

This is n for which M = 1. So

M = z\frac{\sigma}{\sqrt{n}}

1 = 1.88\frac{2.2}{\sqrt{n}}

\sqrt{n} = 1.88*2.2

(\sqrt{n})^2 = (1.88*2.2)^2

n = 17.1

Rounding up:

A sample of 18 is required.

3 0
3 years ago
How many tons are in 40000 pounds
GarryVolchara [31]
If you're on about us tons then it = 20 
However if it's tonnes then it = 18.143695 
6 0
3 years ago
PLEASE HELP
MAXImum [283]

The answer is x=34 degrees.

6 0
3 years ago
Read 2 more answers
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