Answer:
Step-by-step explanation:
Let the other side of the rectangle be y. The perimeter of the rectangle is expressed as P = 2(x+y)
Given P = 30ft, on substituting P = 30 into the expression;
30 = 2(x+y)
x+y = 15
y = 15-x
Also since the area of the rectangle is xy;
A = xy
Substitute y = 15-x into the area;
A = x(15-x)
A = 15x-x²
The function that models its area A in terms of the length x of one of its sides is A = 15x-x²
The side of length x yields the greatest area when dA/dx = 0
dA/dx = 15-2x
15-2x = 0
-2x = -15
x = -15/-2
x = 7.5 ft
Hence the side length, x that yields the greatest area is 7.5ft.
Since y = 15-x
y = 15-7.5
y = 7.5
Area of the rectangle = 7.5*7.5
Area of the rectangle = 56.25ft²
Since the denominators are the same, just subtract the numerators.
The answer is 3/10.
Answer:
$200.63
Step-by-step explanation:
so i did 7% tax first than i took away 25% and got $200.63
- Before Tax Price ($): 250
- Tax Rate (%): 7
- Final Price Including Tax ($): 267.5
- Sale Tax($): 17.5
- New price: $267.5
- Discount percentage: 25%
- Discount: $66.88
- Final Price: $200.63
hoped this helped lmk if it did
