Answer:
BE = 3 in; EF = 2 in; FC = 3 in
Step-by-step explanation:
∠EAD ≅ ∠AEB ≅ ∠EAB so ΔABE is isosceles and AB ≅ BE = 3 in.
Likewise, ∠FDC ≅ ∠FDA ≅ ∠DFC, so ΔDCF is isosceles and AB ≅ BC ≅ FC = 3 in.
Then EF = 8 in - 3in - 3 in = 2 in
What are all of your choices ?
1557/1892
Your calculator can do this:
x = -4, x = 1
x^2 + 3x - 4 = 0
4 and -1 add to 3 and multiply to -4.
(x+4)(x-1) = 0
Separate these by the Zero Product Property.
x+4 = 0
x-1 = 0
Solve.
x = -4
x = 1
b) 16 c) 0.95
