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3 years ago

13

A sweater is on sale for 20% off the regular price. The sale price is $60 . What is the regular price of the sweater?On a 15 sca

le drawing of a car, one part is 8 inches long. How long will the actual car part be?

1 answer:

kherson [118]3 years ago

5 0

Sale price = $60
Discount = 20%
Regular price = $60/0.8 = $75

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Answer:

$a= 2$

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Step-by-step explanation:

Given

$p(x,y) = (6,0)$

$q(x,y) = (3,2)$

$ax + by = 12$

Required

Find a and b

In $p(x,y) = (6,0)$ , $x = 6$ and $y = 0.$

This gives:

$a*6 + b*0 = 12$

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Divide by 6

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In $q(x,y) = (3,2)$ . $x = 3$ and $y = 2.$

This gives:

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Substitute 2 for a

$3*2 + 2b = 12$

$6 + 2b = 12$

Collect Like Terms

$2b = 12 - 6$

$2b = 6$

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Step-by-step explanation:

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