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Mkey [24]
3 years ago
12

Can someone help me with this question? will give thanks!

Mathematics
1 answer:
marin [14]3 years ago
3 0

Answer:

B. 63

Step-by-step explanation:

There are two similar triangles given in the diagram above. Since they area similar, they also have corresponding side lengths that are proportional.

Therefore:

(6 + 3)/3 = x/21

9/3 = x/21

3 = x/21

Cross multiply

21*3 = x

63 = x

x = 63

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