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Sveta_85 [38]
2 years ago
13

Find the perimeter.Simplify your answer.

Mathematics
2 answers:
AnnZ [28]2 years ago
7 0

Answer:

20c+14

Step-by-step explanation:

To find the perimeter we have to add up all the sides

4c+6c+7+4c+6c+7

Combine light terms

20c+14

andreev551 [17]2 years ago
7 0

Answer:

Well your not given C so we just leave that be and we can just add up all 4 sides since perimeter means outside length total. Now when added up,

6c+7+6c+7+4c+4c= 20c+14

20c+14 is the perimeter

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What is the GCF of 18 and 130?<br> 2,<br> 3,<br> 5,<br> 8,<br> 13,
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3 years ago
An electrical rm manufactures light bulbs that have a life span that is approximately normally distributed. The population stand
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Answer:

The 't' test statistic = 1.46 < 1.69

The test of hypothesis is H 0 :μ = 800 is accepted

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Step-by-step explanation:

Step 1:-

Given population of mean μ = 800

given size of small sample n =30

sample standard deviation 'S' = 45

Mean value of the sample χ = 788

Null hypothesis H_{0} =µ  =800

alternative hypothesis  H_{1} = µ ≠ 800

<u>Step 2</u>:-

The 't' test statistic t =  \frac{x-μ}{\frac{sig}{\sqrt{n} } }

                             t = \frac{788-800}{\frac{45}{\sqrt{30} } }

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<u>Step 3</u>:-

The degrees of freedom γ = n-1 = 30-1 =29

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The calculated value t = 1.4607 < 1.69

Therefore The null hypothesis H_{0} ' is accepted.

<u>conclusion</u>:-

A sample of 30 bulbs are came found from average µ= 800

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