Pls asa will mark brainliest the length of a rectangle is 1 ft less than three times the width. the area is 310 ft^2.find the dimensions of the rectangle

w = 10

l=31

Step-by-step explanation:

To calculate an area of a rectangle, use the formula A=l*w. We know the length is 1 ft less than three times the width. So l = 3w - 1. So the area is A= (3w-1)*w.

We also know the area is 310. Substitute this value for A and solve.

To solve the quadratic, use the quadratic formula:

Here a=3, b=-1 and c=-310.

This is w and must be positive since it is distance. So w=10.333....

To find l, substitute into l = 3w-1.

l=3(10.333..)-1

l=31-1 = 30

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step-by-step explanation: