3 years ago

What are the steps I need to do to get the answer?

Mathematics

1 answer:

Margaret [11]3 years ago

8 0

Answer:

B. 10.9

Step-by-step explanation:

Area of triangle= 1/2*24*h

∠N=90° ⇒ Area of triangle= 1/2*MN*ON

MN²= h²+(24-7)²

ON²= h²+7²

24h=MN*ON
24h= √h²+(24-7)²*√h²+7²
(24h)²=(h²+17²)(h²+7²)

h²=k

576k=k²+289k+49k+289*49
k²-238k+14161=0

k=119

h²=119
h=√119= 10.9

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