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matrenka [14]
3 years ago
5

PLS HELP QUICK how do i solve this

Mathematics
1 answer:
Pavel [41]3 years ago
8 0

Answer:

\pi \times r = 3.14 \times 5 = 15.7

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3 years ago
What was the original cost of the jacket.
True [87]

Answer:

  (c)  $80

Step-by-step explanation:

Each discounted price corresponds to the original price multiplied by a factor related to the discount. For a discount fraction of 'd', the multiplier is (1 -d).

This means you can use any of the lines in the table to find the original price.

  <u>5% disount</u>: (1 -5%)·p = $76 . . . . where p is the original price

     p = $76/0.95 = $80 . . . . . . . the original price

  <u>10% discount</u>: (1 -10%)·p = $72

     p = $72/0.90 = $80

  <u>25% discount</u>: (1 -25%)·p = $60

     p = $60/0.75 = $80

_____

<em>Additional comment</em>

The table values for 5% and 10% differ by 5% and $4. That means 5% of the original price is $4. There are two things you can do with this:

  • add back that 5% to the 5%-discounted price: $76 +4 = $80
  • multiply that 5% by 20 to get 100% of the original price: 20(5%) = 20($4) ⇒ 100% = $80.
5 0
2 years ago
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