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jenyasd209 [6]
3 years ago
9

The original price of a pair of shoes is $42 the sale price is 20% off their original price what is the amount of original price

Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
4 0

Answer:

33.60 I dont expect you to mark me brainliest. i even spelled that wrong. Im too lazy to write down the step by step.

Brrunno [24]3 years ago
3 0
First you convert 20% into a decimal which is 0.2 and multiply that by 42 and you get 8.4, that's the discount. Then you subtract 8.4 from 42 and get $33.60 which is your answer. Hope this helps!!
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katen-ka-za [31]

Answer:

(-1/3, 3/4)

Step-by-step explanation:

9x + 8y = 3

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Let's solve the system by eliminating x. We need the coefficients of x to be additive inverses, so they will add to zero eliminating x. The LCM of 9 and 6 is 18. Let's multiply both sides of the first by 2 and both sides of the second equation by -3.

18x + 16y = 6

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The coefficients of x are 18 and -18, which add to zero. Now we add these two equations.

52y = 39

y = 39/52

y = 3/4

Now we substitute y with 3/4 in the first equation and solve for x.

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9x = -3

x = -3/9

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Solution: (-1/3, 3/4)

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