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siniylev [52]
3 years ago
11

Find the measure of GH.

Mathematics
2 answers:
Westkost [7]3 years ago
7 0

Answer:

D

Step-by-step explanation:

Given a tangent and a secant from an external point to the circle, then

The product of the external part and the whole secant is equal to the square of the tangent, that is

8(8 - 6 + 2x) = 12²

8(2 + 2x) = 144 ( divide both sides by 8 )

2 + 2x = 18 ( subtract 2 from both sides )

2x = 16 ( divide both sides by 2 )

x = 8

Then

GH = - 6 + 2x = - 6 + 2(8) = - 6 + 16 = 10 → D

Ierofanga [76]3 years ago
4 0

Answer:

\textsf{GH=10}

Step-by-step explanation:

(EF)^{2} =FG(FH)

(12)^{2} =8(8-6+2x)

144=8(2+2x)

144=16+16x

16x=144-16

16x=128

x=128/16=8

So, GH=-6+2(8)=

-6+16=

=10

\textsf{OAmalOHopeO}

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