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3 years ago

7

a video store took in $5,375 in DVD rentals during july. January sales are expected to be double that amount. If DVDs rent for $

4, how many DVD rentals are expected in January

1 answer:

k0ka [10]3 years ago

5 0

I think the answer would be $2,678.6

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Plz help me with #23 and #41

GuDViN [60]

23) 17/30

41) 3/10 because 3/10 + 7/10 = 10/10 or 1.

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3 years ago

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Alecsey [184]

Answer: Point B

Point B is above (-2, -1)

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3 years ago

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Given y=x^2 how would the graph of y=x^2+4 differ?

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A) The graph will move up by 4 units

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3 years ago

Write 1,334,457. in 12 expanded form

Alchen [17]

1,000,000+3000,000+30,000+4,000+400+50+7

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3 years ago

The Big Telescope Company sells circular mirrors. Their largest mirrors have radii of 5 meters and their smallest mirrors have r

pogonyaev

Answer: 1:5

Step-by-step explanation:

Given: The cost of every mirror is proportional to the cube of the mirror's radius.

i.e. $\dfrac{\text{Cost of smallest mirror}}{\text{Cost of largest mirror}}=\dfrac{(\text{radii of smallest mirror}^3)}{\text{(radii of largest mirror)}^3}$

Their largest mirrors have radii of 5 meters and their smallest mirrors have radii of 1 meter.

Then,

$\dfrac{\text{Cost of smallest mirror}}{\text{Cost of largest mirror}}=\dfrac{1^3}{(5)^3}=\dfrac{1}{125}$

The ratio of the total cost of 25 of the company's smallest mirrors to the cost of one of the company's largest mirrors will be:

$\dfrac{\text{Cost of 25 smallest mirror}}{\text{Cost of largest mirror}}=\dfrac{25\times 1}{125}=\dfrac{1}{5}$

Hence, the ratio of the total cost of 25 of the company's smallest mirrors to the cost of one of the company's largest mirrors = 1:5 .

5 0

2 years ago