Question

I need help ? How can I solve this ?

Answer 1

The answer is a if you get it wrong it's all on me

Answer 2

Answer:  (B) ∠A = 146, ∠B = 21, ∠C = 13

Step-by-step explanation:

∠A = 40x - 14      Given

∠B = 29 - 2x       Given

∠C = 9 + x          Given

∠A + ∠B + ∠C = 180°     Triangle Sum Theorem

(40x - 14) + (29 - 2x) + (9 + x) = 180   Substitution

39x + 24 = 180       Simplify (added like terms)

39x = 156         Subtraction Property of Equality

x = 4                 Division Property of Equality

∠A = 40x - 14      = 40(4) - 14     = 160 - 14     = 146

∠B = 29 - 2x      = 29 - 2(4)       = 29 - 8       =  21

∠C = 9 + x           = 9 + 4             = 13