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NARA [144]
4 years ago
13

3(x + 4.5) = 36 What is the answer to this problem

Mathematics
2 answers:
viktelen [127]4 years ago
6 0

Answer:

Step-by-step explanation:

Ratling [72]4 years ago
3 0

Answer:

x = 7.5

Step-by-step explanation:

3(x + 4.5) = 36.....distribute the 3 thru the parenthesis

3(x) + 3(4.5) = 36

3x + 13.5 = 36....subtract 13.5 from both sides

3x + 13.5 - 13.5 = 36 - 13.5.....simplify

3x = 22.5....divide both sides by 3

(3/3)x = 22.5 / 3

x = 7.5 <========

lets check it..

3(x + 4.5) = 36

3(7.5 + 4.5) = 36

3(12) = 36

36 = 36 (correct)...so it checks out

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spayn [35]
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EXPLANATION:
To find the y intercept you have to substitute the x with zero because the y intercept always lies on the y axis which means that they will always have the coordinates (0,y)
The same goes for the x intercept. To find the x intercept you have to substitute the y with zero because the x intercept always lies on the x axis which means that they will always have the coordinates (x,0)


WORKING OUT:
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The y intercept)
x=0
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The x intercept)
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3 years ago
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