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I'm on a deadline! Please HELP!

Find the value of x to the nearest tenth.

A. 15.5
B. 60.0
C. 39.0
D. 31.0

I'm on a deadline! Please HELP! Find the value of x to the nearest tenth. A. 15.5 B-example-1
User Jeguyer
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1 Answer

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This is by similar triangles:

You can actually pull out two similar triangles from the figure. One large, and the other small, but they are both similar.

The large triangle has sides: 62, 78, 98

The smaller triangle inside has sides: 2x, 39, 49

By similar ratio:

(2x/62) = (39/78)

2x/62 = 1/2

4x = 62

x = 62/4

x = 31/2

x = 15.5

Option A.
User Ollie Khakwani
by
8.1k points

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