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mr Goodwill [35]
3 years ago
6

Elise says, "If you subtract 14 from my number and multiply the difference by - 3, the result is - 63."

Mathematics
2 answers:
Ksivusya [100]3 years ago
6 0
Answer:
35

Explanation:
Let x be equal to Elise’s number.
We can set up our equation like this:

(x-14)(-3)=-63
Expand the parentheses
-3x+42=-63
Subtract both sides by 42
-3x+42-42=-63-42
-3x=-105
Divide both sides by -3
-3x/-3=-105/-3
x=35

I hope this helps!
igor_vitrenko [27]3 years ago
5 0

Answer:

35

Step-by-step explanation:

-3(x-14)=-63

distribute

-3x+42=-63

-3x=-105

x=35

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Answer:

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Step-by-step explanation:

Let x in be the width dimension, the length dimension will be x+18 in. Area of a rectangle is calculated as A=lw. Given  the area as2143 sq in, x can be calculated as:

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x=39\\\\A=x^2+18x\\\\=39^2+18\times39\\\\=2223 \ in^2#l=39+1854in

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Answer:

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Step-by-step explanation:

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