Question

(need help on geometry w/pic )

4.Find the value of x and y so that ΔABC ≅ ΔDEF by HL

Answer 1

AB = DE:

5x + 2 = 8x - 10

Subtract 5x from both sides:

2 = 3x -10

Add 10 to both sides:

3x = 12

Divide both sides by 3:

x = 12/3

X = 4

Y = 5

BC = FE:

3y - 7 = 8

Add 7 to both 2ides:

3y = 15

Divide both sides by 3:

y = 15/3

y = 5