Question

A door sign has a length of 7 inches and an area of 25 square inches. Use the numbers and symbols shown to the right to choose an equation that can be used to find the unknown width (w). Choose all that apply. Then solve.

Answer 1

The equation is Area = length × width.

The width is approximately 3.57 inches.

Explanation:

Door sign length, l = 7 inches

Area, A = 25 square inches

Width (w) is unknow.

Since the area is the product of the length and the width,

A = l×w

25 = 7×w

Dividing both sides by 7

w = 25/7

≈ 3.57 inches

Answer 2

The equation is
`25=7w`

The width is 3.6 inches, approximately.

Explanation:

Givens

• The length of the door sign is 7 inches.
• Its area is 25 square inches.

We know that the area of a rectangle is

`A= w * l`

Where
`w` is width and
`l` is length.

We know by given that
`l= 7 \ in` and
`A= 25 \ in^(2)`, replacing these values and solving for
`w`, we have

`25=7w` (this is the equation used to solve the problem).

`w=(25)/(7) \approx 3.6 \ in`