3 years ago

Multiply by 4, then divide by 2 First term: 60

1 answer:

3 0

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If a pair of jeans cost 45 dollars before the sale and the sale is taking 9 dollars off of the original price what was the perce

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20%

Step-by-step explanation:

A pair of jeans cost $45 before the sale.

The sale is taking $9 off of the original price.

Then

$45 - 100%

$9 - x%

Write a proportion:

$\dfrac{45}{9}=\dfrac{100}{x}$

Cross multiply:

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3 years ago

. The two bottles are similar in shape. The larger bottle holds 100 m/ of perfume. Calculate how many millilitres of perfume the

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Answer:

The smaller bottle holds 12.5 ml of perfume.

====================

<h2>Given</h2>

Two bottles of similar shape;
Larger bottle has volume of 100 ml;
The length of larger bottle is 10 cm;
The length of smaller bottle is 5 cm.

The volume of smaller bottle.

<h2>Solution</h2>

Find the scale factor, the ratio of corresponding dimensions:

$k = 5/10 = 1/2$

We know the volume is the function of three dimensions, therefore the ratio of volumes is the cube of the scale factor:

$V_{small}/V_{large} = k^3\\$

Substitute the known values and find the volume of small bottle:

$V_{small}/100= (1/2)^3\\$
$V_{small}/100= 1/8$
$V_{small}= 1/8*100=12.5$

The smaller bottle holds 12.5 ml of perfume.

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2 years ago

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3 years ago

Miranda will have 500 guests at her Sweet Sixteen party. She conducted a random survey of 50 guests to determine how many of eac

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Step-by-step explanation:

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3 years ago

Multiply by 4, then divide by 2 First term: 60 ​

Multiply by 4, then divide by 2 First term: 60