check the picture below.
so it has a base of 18x18 and a height of that much.
Answer:
10x+6
Step-by-step explanation:
the area of a rectangle is (length+height)*2
so you have to add two representations of the length and height and then multiply it by 2
It has a coefficient of 4 :)
Answer:
x=4
Step-by-step explanation:
7x - 9 = 19
add 9 to both sides
7x = 28
divide by 7
x = 4