Question

Can u help me plz and thank u​

Answer 1

hey

Explanation:

angle 7x-9 +angle 4x=90°

11x=90+9

11x=99

x= 9°

Answer 2

∠CBD = 54°

Explanation:

∠ABC = 90°

∠ABD + ∠CBD = ∠ABC

4X + 7X -9 = 90

11X = 90+9

11X = 99

X = 99/11

X=9°

∠CBD = (7X -9)° = 7 * 9 - 9 = 63-9 = 54°