Question

E

(5x + 9)
(30-3x)
A
Find the value of angle DFE
Angle BFC=Angle DFA=Angle EFA + Angle DFE
Solve for x, then use substitution for 27+2x
5x+9=30-3x+27+2x
Everything is on the picture

Answer 1

9514 1404 393

Answer:

43°

Explanation:

Following the instructions is generally useful.

5x +9 = 30 -3x +27 +2x

6x = 48 . . . . add x-9

x = 8 . . . . . . .divide by 6

27 +2x = 27 +2(8) = 43 . . . . substitute into the expression for angle DFE

angle DFE = 43°