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timofeeve [1]
3 years ago
11

How do I find X in this problem

Mathematics
1 answer:
pogonyaev3 years ago
4 0
You know that BC is congruent to x so you need to solve for x using the ratio:
\frac{12}{24}=\frac{x}{BC}

So then we need to find BC.

We know:
A=\frac{base \times height}{2}
28=\frac{BC \times 7}{2}
Therefore BC =8

Then:
\frac{12}{24}=\frac{x}{8}
x=8 \times \frac{12}{24} = 4
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you can not add the four to the 5x because it does not have a matching variable.

So, you have: 5x+ 4

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