Question

A.)23
B.)30
C.)53
D.)60

Answer 1

m∠ABC = 150°

Explanation:

180° - 90° = 90°

`(2x+14)+(x+7)=90`

`(2(23)+14)+(23+7)=90`

`((46)+14)+(30)=90`

`(60)+(30)=90`

`x=23`

90° + 60° = 150°