Answer:

Step-by-step explanation:

30x-40+12=572
30x=600
x=20
Answer:
x=10
Step-by-step explanation:
The two line segments should be equal, so you can set 2x-10 equal to x.
2x-10=x
-10=-x
x=10
Answer:
(D) -2
Step-by-step explanation:
Plug in r=5 and s=-7 to the equation:
-6(5)+(-7)-(5)(-7)
Now we can solve and simplify:
-30-7+35
Combine:
-2
160 = 100%
56 = x%
then you would cross multiply
160x = 56(100)
160x = 5600
x =

x = 35
so
35% of 160 is 56.