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AnnZ [28]
3 years ago
14

How do I solve this system of equations by adding, subtracting, or multiplying? x-y=8;x+y=12

Mathematics
1 answer:
Natasha2012 [34]3 years ago
7 0
By substitution.
Get y or x alone then insert it into the other equation solving for one of the two variables. After that substitute ur answer into one of the equations then solve.
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After all markdowns and discounts, Charlene's prom dress cost her $22 before tax. The dress was on a rack labeled "50% off lowes
uysha [10]

Answer: $88.

Step-by-step explanation:

given data:

The cost of the dress for the prom = $22

label of the rack the dresss was on = 50%.

lowest marked price for the dress = 75%.

Solution:

if the lowest marked price of the cloth was already 75%.

and the current cost of the clothe is $22

the original cost of the cloth would be

100% – 75% = 0.25%

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The original cost of the dress was $88

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3 years ago
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<em><u>9.</u></em>

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kakasveta [241]
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3 0
2 years ago
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I need help on this question ​
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