Question

What is the value of x and the measure of ∠DBC, respectively?

A. x = 3; ∠DBC = 9
B. x = 36; ∠DBC = 108
C. x = 18; ∠DBC = 36
D. x = 18; ∠DBC = 54

Answer 1

D. x = 18; ∠DBC = 54

Explanation:

m∠ABD + m∠CBD = 90°

2x + 3x = 90°

5x = 90°

x = 18°

m∠DBC = 3x

m∠DBC = 3(18°)

m∠DMC = 54°

Answer 2

Hmm i don't know is A B C D

CBA should be hmm 90 degrees I think

Then you should be able to calculate

it's so easy

Explanation: