13a) y = 0.45x
13b) 52 * 0.45 = 23.4
13c) I will let u figure this one out
13x+25=0
13x+25-25=0-25 Since two opposites added give zero, remove them from the expression 13x=-25
Answer:
What do you mean?
Step-by-step explanation:
The area of a triangle is 1/2 x base x height.
The area of the triangle is 1/2 x 6 x 8 = 24 square cm.
There are 4 identical triangles so 24 x 4 = 96 square cm.
The area of the square base = 6 x 6 = 36 square cm.
Total area = 96 + 36 = 132 square cm.
It's the first one, an algebraic expression contains variables
