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Ede4ka [16]
3 years ago
7

5 8 y Find the exact value of y. y =

Mathematics
1 answer:
inn [45]3 years ago
8 0

Answer:

y=2\sqrt{10}

Step-by-step explanation:

By applying geometric mean theorem in the given right angle,

\frac{AD}{DB}=\frac{DB}{CD}

By substituting values in the given ratio,

\frac{5}{y}= \frac{y}{8}

y^2=8\times 5

y^2=40

y=2\sqrt{10}

Exact value of y is 2\sqrt{10}.

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