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r-ruslan [8.4K]
3 years ago
13

The price of a DVD is $19 . The price is 12% lower than last week. What was the price of the DVD last week? Round your answer to

the nearest cent. Enter your answer in the box.
Mathematics
1 answer:
nataly862011 [7]3 years ago
5 0

Answer:

The original cost of the DVD was $21`.59

Step-by-step explanation:

In order to find this, you first must note that the new price is 88% of the older price. We get this since there was a subtraction of 12%.

Now knowing that, we can divide the new price by the percentage paid and it will give us the original price.

$19/88% = Original Cost

19/.88 = Original Cost

$21.59 = Original Cost

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3 years ago
If the width and length of a rectangle are both increased by 10%, by what percent does the area of the rectangle increase?
S_A_V [24]

Answer:

10%

Step-by-step explanation:

We know Perimeter of rectangle

= 2 (Length + Width)

If width and length are increased by 10%

New length= L + 10/100L = (1.1) L

New width = W + 10/100W = (1.1) W

Perimeter = 2 [(1.1) L + (1.1) W]

Perimeter = 2 (1.1) (L + W)

Perimeter = (2.2) (L + W)

Increase in perimeter = 2.2 (L + W) - 2 (L + W)

The increase in Perimeter = 0.2 (L + W)

Percent increase

= 0.2 (L + W)/2 (L + W) × 100

= 0.2/2 × 100

= 0.1 × 100

= 10%

I hope this helped and if it did, please mark as Brainliest.

7 0
2 years ago
Will mark YOU brainliest!!
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Answer: 15 miles per gallon

Step-by-step explanation:

135 divided by 9

5 0
2 years ago
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A cylinder with<br> a radius of 2<br> inches and height<br> of 8 inches
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Answer:

V≈100.53

Step-by-step explanation:

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First step for solving x²+2x-11=4
fenix001 [56]

Answer:

subtract 4 on both side.

5 0
3 years ago
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