Answer:
12.5%
Step-by-step explanation:
Answer:
25x-49
Step-by-step explanation:
5x×5x=25x 5x×-7= -35x
7×5x=35x 7×-7=-49
(combine like terms)25x+-35x+35x= 25
hope that helped you!
Answer:
Step-by-step explanation:
4 1/2 × 2 3/5
9/2 × 2 × 3/5
9 × 3/5
<u>=</u><u> </u><u>2</u><u>7</u><u>/</u><u>5</u><u> </u><u>=</u><u> </u><u>5</u><u> </u><u>2</u><u>/</u><u>5</u>
Answer:
2
Step-by-step explanation:
= 4+8/2×(6-3)
= 12/2×6-2×3
= 12/12-6
= 12/6
= 2
Area is equal to length times width. The perimeter (the amount of rope) has to equal twice the length added to twice the width so we're left with:
A = l * w
200 = 2l + 2w
solve for either l or w
l = 100 - w
plug into the area equation to get one equation with two variables
A = w(100 - w)
A = -w^2 + 100w
take the derivative
A' = -2w + 100
set the derivative equal to zero
0 = -2w + 100
2w = 100
w = 50
This is the width that maximizes the area
with a width of 50, the length must also be 50 to have a perimeter of 200
therefore, they can rope up to 50 * 50 = 2500 ft^2
