3 years ago

Please need help thank you

Mathematics

1 answer:

jenyasd209 [6]3 years ago

7 0

Answer:

q.4 is 24 pages

q.5 is 27 yrs. old

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The Pave the Way Company is installing a new walkway. The installer uses 13 paving stones for every foot of walkway. He needs 11

Vladimir [108]

Hey There!

The answer would be 3 Feet!

Solution-

1) 117-78= 39

2) One foot is 13 paving stones.

3)39/13= 3 feet

Thus, your answer is 3 feet

Thank You!

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3 years ago

A large tank holds 1.9x10 to the power of 7 gallons of oil. how much oil can be stored in 7 tanks? Write in scientific notation

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netineya [11]

5x-2y+3x+2y

Combine like terms

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2 years ago

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A researcher is interested in estimating the mean weight of a semi trailer truck to determine the potential load capacity. She t

Kaylis [27]

Answer: 95% confidence interval = 20,000 ± 2.12 $\times$ $\frac{1500}{\sqrt{17} }$

( 19228.736 , 20771.263 ) OR ( 19229 , 20771 )

Step-by-step explanation:

Given :

Sample size(n) = 17

Sample mean = 20000

Sample standard deviation = 1,500

5% confidence

∴ $\frac{\alpha}{2}$ = 0.025

Degree of freedom ( $d_{f}$ ) = n-1 = 16

∵ Critical value at ( 0.025 , 16 ) = 2.12

∴ 95% confidence interval = mean ± $Z_{c}$ $\times$ $\frac{\sigma}{\sqrt{n} }$

Critical value at 95% confidence interval = 20,000 ± 2.12 $\times$ $\frac{1500}{\sqrt{17} }$

( 19228.736 , 20771.263 ) OR ( 19229 , 20771 )

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3 years ago