Question

I need help with this

Answer 1

Explanation:

∠5 = ∠1 {Alternate exterior angles are congruent}

8x - 19 = 7x - 3

Add 19 to both sides

8x = 7x - 3 + 19

8x = 7x + 16

Subtract 7x from both sides

8x - 7x = 16

x = 16

∠5 = 8x - 19

= 8*16 - 19

= 128 - 19

∠5 = 109

∠5 + ∠4 = 180 {linear pair]

109 + ∠4 = 180

∠4 = 180 - 109

∠4 = 71°