Answer:
5
Step-by-step explanation:
8x + 50 = 90
8x + (50-50) = 90-50
8x = 40
8x/8 = 40/8
X = 5
Hope this helps!
x = 5°
Start off with 8x° + 50° = 90° because it shows that that is a right angle
Subtract 50° from both sides
8x° = 40°
Divide both sides by 8 to get x alone
x° = 5°
Check:
8(5)° + 50° = 90°
40° + 50° = 90°
90° = 90°
