Answer:
10x + 9
Step-by-step explanation:
-1 - (-10x - 10)
Distribute.
-1 + 10x + 10
These are the steps to finding the trapezoid perimeter.
35+28?
that equals 63
3
It is three because 3×5 is 15 and 3×3 is 9 so the greast common factore is 3.
-7
Answer: x is 20
This is ratio
a : c = b : x and d : unknown
a : c = 9 : 12 = 3 : 4 which is 9/12
b : x = 15 : x which is 15 / x
So the proportion will be :
3/4 = 15/x
So Cross multiplying
3x = 90
Divide both side by 3
x = 90/3
x = 20
