The perimeter of a rectangle sandpit is 40 meters. The length of the sandpit is 1 meter less than twice it’s width. What are the dimensions of this sandpit

The width is 7 meters and the length is 13 meters

Step-by-step explanation:

The perimeter of a  rectangle sandpit is 40 meters.

Let the width be w units, then the length which is 1 meter less than twice it’s width becomes:

The perimeter of a rectangle is given by:

We substitute P=40 and the length in term of w to get:

We simplify to get:

Divide through by 2 to get:

Hence

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.