Question

HELP PLEASEEE!!!!! i dont know what to do

Answer 1

1. 51°

2. 55°

3. 5x + 10

Explanation:

1. We know ∠B + 39° = 90°, so ∠B = 90 - 39 = 51

2. We can use an algebraic equation to solve this problem.

2x + 70 = 180

2x + 70 (-70) = 180 (-70)

2x (/2) = 110 (/2)

x = 55

3. ∠ABD = (3x + 10) + (2x) = 5x + 10