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2 years ago

Evaluate 3/7(14)+5/8(8) ?

Mathematics

2 answers:

12345 [234]2 years ago

5 0

Answer:

Step-by-step explanation:

Misha Larkins [42]2 years ago

4 0

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Kamal is buying supplies for a science lab. He needs a piece

V125BC [204]

Answer:

kamal needs to buy 84 in of wire.

Step-by-step explanation:

multiply the length value by 12:

if he wants 7 feet, and the store only sells it in inches, then we know what a foot is twelve inches so 12x7=84.

hope this helped! :D <3

8 0

3 years ago

Read 2 more answers

What is 1/5 plus 3/7 in fractions

Varvara68 [4.7K]

Answer:

22/35

Step-by-step explanation:

first get a common denominator in order to add. The common denominator is 35.

the new fractions should be 7/35 + 15/35

add the top and you get 22/35

7 0

3 years ago

Read 2 more answers

A cheese processing company wants to estimate the mean cholesterol content of all one-ounce servings of a type of cheese. The es

Mrrafil [7]

Answer:

The minimum sample size required to construct a 95% confidence interval for the population mean is 65.

Step-by-step explanation:

We are given the following in the question:

Population standard deviation,

$\sigma = 3.10\text{ milligrams}$

We need to construct a 95% confidence interval such that the estimate is within 0.75 milligrams of the population mean.

Thus, the margin of error must me 0.75

Formula for margin of error:

$z_{critical}\times \dfrac{\sigma}{\sqrt{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$0.75 = 1.86\times \dfrac{3.10}{\sqrt{n}}\\\\\sqrt{n} = \dfrac{1.96\times 3.10}{0.75}\\\\\sqrt{n} = 8.101\\\Rightarrow n = 65.63\approx 65$

Thus, the minimum sample size required to construct a 95% confidence interval for the population mean is 65.

5 0

2 years ago

rayan and her husband have 8 nieces 9 nephews 6 cousins 3 aunts and 5 uncles how many ways could just the nieces stand in line t

MakcuM [25]

Answer:

8! or 456 ways

Step-by-step explanation:

8 x 7 x 6 x 5 x 4 x 3 x 2 = 456

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3 years ago

Mr smiths loan balance has decreased by 71.4%. Calculate the change in his loan balance

nikklg [1K]

Can you write the full question

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3 years ago