Answer: X=16
Step-by-step explanation: Add 90 and 22 and you will get 112. Since the beginning of the equation is "7x" which is multiplication you use Inverse Operations. So, you divide the sum, 112, by 7. Your answer will be 16.
The Scientific notation for above value is :
(-9/8)x - 7 = -25
(-9/8)x - 7 + 7 = -25 + 7
(-9/8)x = -18
((-9/8)x)/(-9/8) = -18/(-9/8)
x = 18 × (8/9)
x = 16
Answer:
Step-by-step explanation:
sum of angles of a triangle= 180°
x+2x+2x+10=180
5x+10=180
5x=170
x=170/5
x=34
.:
x=34°
2x=34×2=68°
2x+10=2×34+10=68+10=78°