Answer:
maximum height is 45/4 in feet
Answer:
x = 12
Step-by-step explanation:
2(x-18)+ 3x = 24
distribute the 2
2x - 36 + 3x = 24
combine like terms
5x - 36 = 24
+ 36 on both sides
5x = 60
divide by 5
x = 12
Answer:
-0.89, 0.4, 1/2, 9/8, I-2I
Step-by-step explanation:
Answer:
The answer should be B
Step-by-step explanation:
Let's be a and b the sides of the rectangle.
1 Area is 1600 =a*b
2. Perimeter is 2(a+b)=160 ==>b=80-a
So,
1600=a*b=a*(80-a)==>80a-a²=1600
==> a²-80a+1600=0
==> (a-40)²=0
==>a=40 or a=-40 (to exclude since <0)
==>b=1600/40=40
The rectangle is a square of 40m of side.