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lubasha [3.4K]
3 years ago
4

If EF bisects angle CEB, angle CEF=7x + 21 and angle FEB = 10x - 3, find the measure of DEB.

Mathematics
1 answer:
Tpy6a [65]3 years ago
3 0
ANSWER

FEB=77°

WORD EXPLANATION

(i’m guessing you meant FEB instead of DEB??) okay. so if EF BISECTS something that means that it perfectly divides it in two which means CEF=FEB. you would set those equal to each other & solve.

NUMERIC EXPLANATION

7x+21=10x-3
(+3 to each side)
7x+24=10x
(-7x to each side)
24=3x
(/3 to each side)
8=x

next add it to one of the equations

7x+21 ; 8=x
(7•8)+21
56+21
77
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