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Find EF, Im having trouble with this
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1 vote
Find EF, Im having trouble with this

Find EF, Im having trouble with this-example-1
User Missuse
by
7.9k points

1 Answer

5 votes

Answer:

EF = 6

Explanation:

(whole secant) x (external part) = (whole secant) x (external part)

(4+2x) * 4 = (5+x) * 5

Distribute

16+8x = 25+5x

Subtract 5x

16+3x = 25

Subtract 16

3x = 25-16

3x = 9

Divide by 3

x = 9/3

x=3

We want EF

EF = 2x = 2*3 = 6

User Jrochette
by
7.6k points
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