Question

1) what is the value of x ?

Answer 1

Answer:

a). x = 9

b). m∠ABC = 27°

c). m∠CBD = 153°

Step-by-step explanation:

1). Property of linear pair of angles states, "sum of linear pair of angles is 180°"

3x + (15x + 18) = 180°

18x + 18 = 180

18x = 180 - 18

18x = 162

x = 9

2). m∠ABC = 3x°

                   = 3×9

                   = 27°

3). m∠CBD = (15x + 18)°

                  = (15×9 + 18)°

                  = (135 + 18)°

                  = 153°