The perimeter is just adding all the sides together.
a.) 180 = 40 + 40 + x + x
180 = 80 + 2x Subtract 80 on both sides
100 = 2x Take 1/2 of 100 to get x
x= 50cm
b.) 1000 = 150 + 150 + x + x
1000 = 300 + 2x Subtract 300 on both sides
700 = 2x Take 1/2 of 700 to get x
x = 350
A. Step 1
There should be no radicals in the equation
Answer:
Its D.
Step-by-step explanation:
7 is being divided from 3.
The simple rules in adding equation is
- simplify like terms first
- then get one variable on one side of the equation
- then solve the rest
