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vlabodo [156]
3 years ago
7

Francis heard that a care stereo system was on sale for 30% off. If the sale price was $57.75, what was the original price of th

e stereo?
Mathematics
1 answer:
Wewaii [24]3 years ago
7 0

Answer:

$82.5

Step-by-step explanation:

30% of $82.5 is $24.75. If we subtract 30% of the original price ($82.5) we get $57.75.

(sorry if this is confusing, I'm not very good with words)

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3 0
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The surface area of a sphere is 113.04 mm2. What is the volume of the sphere? Use 3.14 for π and round to the nearest hundredth.
Phoenix [80]
By definition, the surface area of the sphere is given by:
 A = (4) * ( \pi ) * (r ^ 2)
 
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 Clearing r we have:
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 Substituting values:
 r = \sqrt{113.04 / (4 * 3.14 )}
 r = 3 mm

 Then, the volume of the sphere is given by:
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5 0
3 years ago
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6 0
3 years ago
The area of a rectangular garden is 8330 m².
givi [52]

9514 1404 393

Answer:

  85 m

Step-by-step explanation:

The area is the product of length and width. This can be used to find the width.

  A = LW

  8330 m² = (98 m)W . . . . . . . . . . . fill in the given values

  8330 m²/(98 m) = W = 85 m . . . . divide by the coefficient of W

The width of the garden is 85 meters.

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3 years ago
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