Answer:
x² +4x
Step-by-step explanation:
Area of triangle= ½ ×base ×height
Given: base= 2x, height= x +4
Area of triangle
= ½(2x)(x +4)
= x(x +4)
= x(x) +x(4) <em>(</em><em>expand)</em>
= x² +4x
Answer: 12
Step-by-step explanation:
Let w = the width of the rectangle
Let 2w = the length
P = 2l + 2w
36 = 2(2w) + 2w
36 = 4w + 2w
36 = 6w
w = 6
l = 2(6)
l = 12
Answer:
A
Step-by-step explanation:
because you need to reflect to match the shape
Which grade is this??????
Answer:
Positive
Step-by-step explanation:
-4(-5)(9)
Negative cancels out negative, so it makes a positive:
20(9)
Simplify normally to get 180 as your final answer.
