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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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suppose an amount increase by 50%, then decrease by 50%. will the amount after the decrease be the same as the original amount
bonufazy [111]

Answer:

Lets say you have "100" apples.

If you lost 50% of those 100 apples, (50 apples) and then half of them went rotten, then no, it wouldn't be the same. But if you picked them all back up, and none of them were damaged, then yes, they would stay the original amount.

Step-by-step explanation:


4 0
3 years ago
An engineer is designing a fuel tank in the shape of a cylinder. The tank must have a volume of 3,500 cubic inches. The height o
elena-s [515]

Answer: 24 inches

Step-by-step explanation:

Let the radius be represented by x

Therefore, the height will be = 2×x = 2x

Volume of a cylinder = πr²h

where, Volume = 3500

π = 3.14

r = x

h = 2x

We then slot in the values into the formula

Volume = πr²h

3500 = 3.14 × x² × 2x

3500 = 3.14 × 2x²

2x² = 3500 / 3.14

2x² = 1114.65

Divide through by 2

x² = 1114.65 / 2

x² = 557

x = ✓557

x = 23.6 = 24 approximately

The radius is 24 inches

3 0
3 years ago
Can someone help me​
sashaice [31]

Answer:

16.25

Step-by-step explanation:

6.5 + 5 = 32.5/2 = 16.25

8 0
3 years ago
11. There are a total of 30 puzzle pieces. Three
natulia [17]

Answer: 2

Step-by-step explanation:

5-3=2

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6 0
3 years ago
Read 2 more answers
-4+x= -11 please answer it
Slav-nsk [51]

Answer:

x=-7

Step-by-step explanation:

add 4 to both sides. leaving you with x=-7

8 0
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