Arectangular room that is 3 feet longer than it is wide has area of 54 square feet how many feet long is the room

The room is 9 feet long.

Step-by-step explanation:

Lets take the width of the room as feet.

Then, the length of the room will be feet.

Are of a rectangle = Length * Width

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Thefore either,

                 or              

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is the width of the room, so a width cannot have a negative value. So we take the positive value.

Therefore,

⇒ Width of the room is 6 feet.

Length of the room = = =9 feet.

Therefore the room is 9 feet long.

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x