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3 years ago

What is the value of m in the figure below? If necessary, round your answer to

Mathematics

1 answer:

Anastasy [175]3 years ago

4 0

<h3>Answer: A) 6.7</h3>

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Work Shown:

Use the geometric mean formula to find that BD = 6

BD = geometric mean of AD and DC

BD = sqrt(AD*DC)

BD = sqrt(12*3)

BD = 6

Then use the pythagorean theorem to find the missing side for triangle BCD

a^2+b^2 = c^2

(CD)^2 + (BD)^2 = (BC)^2

3^2 + 6^2 = m^2

m^2 = 45

m = sqrt(45)

m = 6.70820393249937 approximately

m = 6.7 after rounding to one decimal place

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3 years ago

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meriva

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Step-by-step explanation:

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