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amm1812
2 years ago
15

How do I do it? Acellus exam help

Mathematics
1 answer:
Mnenie [13.5K]2 years ago
4 0

Answer:

30

Step-by-step explanation:

triangle ABC is proportional to triangle BCD so

hypothenuse of ABC/ ajdacent of ABC = hypotrnus BCD/ ajdacent of BCD

in short

AC/BC = BC/DC

10/x = x/3

10 . 3 = x²

x² = 30

x = √30

so the question mark is 30

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