Answer:
18+3b-2b-1
b+17
Step-by-step explanation:










[RevyBreeze]
Answer:
x=-400
x=-95
Step-by-step explanation:
They are negative because a negative times a negative is a positive.
Answer: x = -7
Step-by-step explanation:
x = -7 will be a vertical line passing through all y values, and perpendicular to y = 5
The attached graph shows the lines and the point.
Isosceles - two sides equal
2 angels the same
29 + 29 = 58
180 - 58 = 122
122 = DFE
Answer:
210 by 120
Step-by-step explanation:
perimeter=2l+2w
length= 2w-30
width= w
2(2w-30+w) = 660
6w-60= 660
6w= 720
w=120
length= 2*120-30 = 210