Step-by-step explanation:
Lets third angle be x
or,10°+x+80°=180° ( sum of triangle )
or,90°+x=180°
or,x=180°-90°
or,x=90°
Answer:
90°
All angles inside a triangle add up to 180 so:
180 - 10 - 80 = 90
Therefore, the 3rd angle is 90°
Answer:A
like fractions have the same denominator. So A is correct
A3.5x+1008y
n=5
6(n-2)-8=22+4(2-n)
open brackets
6n-12-8=22+8-4n
collect like terms
6n+4n=22+8+12+8
10n=50
n=50/10
