Question

Please answer thx so much

Answer 1

Answer: E

Explanation:

length: 3w

width: ?

perimeter: 20 inches

`Formula: P=2(l+w)`

Plug your values into the formula.

`20=2(3w+w)`

Divide by 2.

`(20)/(2)=3w+w`

Combine like terms and simplify.

`10=4w`

Divide by 4

`(10)/(4)=w\\(5)/(2)=w`

Now determine the length, replacing the value of w.

`3((5)/(2))=(15)/(2)`

Now, to find the area, use the following formula:
`A=l*w`

`A=((15)/(2))((5)/(2))\\A=(75)/(4)\\ A=18.75in^2`