A rectangular field is to be fenced on three sides with 1000 m of fencing. The fourth side is a straight river's edge that will not be fenced. Find the dimensions of the field so that the area of the enclosure is 120000 square meters.

or

Step-by-step explanation:

We are given that

Fencing used on three sides=1000 m

Area of field enclosure=120000 square meters

Let x be the length and y be the width of rectangle.

Fencing used on three sides=2x+y

Area of  field=

Using quadratic formula

Dimension of the field

or

is it 35

step-by-step explanation:

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !