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
Just add 5 5 and 10 10 to get yo answers
i will work
For a rectangle area, use base x height, or length x width.
6 km long x 4 km wide = 24 km
The area of Jackson's orchard is 24 km
hope this helps
x = multiply
parallel = same slope
y=1/5x-4
slope= 1/5x
solve using for b using y=mx+b
-4=(1/5)(5)+b
-4=4+b
(subtract -4 from both sides)
-8=b
put your equation together:
y=1/5x-8