3 years ago

HURRY PLEASE BEST ANSWER GETS BRAINLIEST!

Mathematics

2 answers:

Tju [1.3M]3 years ago

6 0

Answer:

C

Step-by-step explanation:

nekit [7.7K]3 years ago

3 0

Answer:

The value of the second expression is 12, so the expressions are not equivalent.

Step-by-step explanation:

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Answer: 15

Step-by-step explanation:

small: 5 12 13

middle: __ 36 39

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Notice that to get from the small to the large, multiplied by 9

5(9) = 45 12(9) = 108 13(9) = 117

That is because the sides are proportional $\dfrac{5}{45}=\dfrac{12}{108}=\dfrac{13}{117}\rightarrow\dfrac{1}{9}$

To get from small to middle, multiply by 3

5(3) = 15 12(3) = 36 13(3) = 39

To solve it using proportions:

$\dfrac{5}{x}=\dfrac{12}{36}\\\\\\\text{Cross Multiply and solve for x:}\\5(36)=12x\\\\\dfrac{5(36)}{12}=x\\\\5(3)=x\\\\\large\boxed{15}=x$

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