Answer:
(a) 3x+28+5x+52+2x-10=180 (∠ sum of Δ)
10x+70=180
10x=110
x=11
(b) ∠C = 2x-10
= 2(11)-10
= 12°
d
Step-by-step explanation:
aflse
-2
9+n/4= -15
cross multiply
9+4-15=n
13-15=n
n=-2
255b
subtract 256b by b
