Answer:
2
Step-by-step explanation:
as H=20 and W=10
So H=constant.(W)
H=2(10)
H=20
So constant is 2
The answer is 10 because its in the tens place
A. x = -6
6-x-x = 18
6-2x =18
-2x = 12
x = -6
Equation: y=x-2 , Hope this helps!
5.78x10^7
If you need an explanation on how then let me know :)