Answer:
Simplified :
x = 13/12
(Mixed number) :
x = 1 1/12
Step-by-step explanation:
Answer:
20in
Step-by-step explanation:
The perimeter is:
P = 2x + 2y = 80
The area is:
A = x * y
The area as a function of a variable is:
A (x) = x * (40-x)
Rewriting we have:
A (x) = 40x-x ^ 2
We derive the function:
A '(x) = 40-2x
We equal zero and clear x:
40-2x = 0
2x = 40
x = 40/2
x = 20 feet
The other dimension is:
y = 40 - x
y = 40 - 20
y = 20 feet
The area will be:
A = x * y
A = 20 * 20
A = 400 feet ^ 2
Answer:
The dimensions are:
x = 20 feet
y = 20 feet
The area is:
A = 400 feet ^ 2
Answer:
19
Step-by-step explanation:
9 + 10 = 19
75 42
----- -----
100 x
75 x= 4200
--- ------
75 75
x = 56
