Answer:
Multiplication (150x4=600 25x4=100%)
Answer:
y = 70 yd
A(max) = 9800 yd²
Step-by-step explanation:
Let call " y " sides of the rectangular area running perpendicular to the river, then:
Perimeter of the area (without one side is )
P = x + 2*y and we have 280 yards of fencing material
280 = x + 2*y ⇒ y = ( 280 - x ) / 2
And rectangular area is:
A = x*y
Area as a function of x is:
A(x) = x * ( 280 - x ) / 2
A(x) = 280*x /2 - x²/2
Taking derivatives on both sides of the equation we get:
A´(x) = 140 - x = 0
140 - x = 0
x = 140 yd
And y
y = ( 280 - x ) / 2
y = 140 /2
y = 70 yd
And
A( max ) = 140*70
A(max) = 9800 yd²
Answer:
All solutions
Step-by-step explanation:
Regardless of what x equals the answer will work
Answer:
y = 3
Step-by-step explanation:
We need to solve the below proportion in this problem,
First of all, we cross multiply both sides such that,
Dividing both sides by 18.
For the above proportion, we find that the value of y is equal to 3.