Question

1.) I think of a number, double it and the result is 16.

2.) I think of a number, subtract 7 and the result is 10.


3.) The sides of a rectangle are x cm and 4 cm. It perimeter is 28 cm. Evaluate the value of x.

4.) The sides of a rectangle are x cm and 5cm. Its perimeter is 40 cm. Determine the value of x.


5.) The length of a rectangle is 6 cm more than its width. If its perimeter is 60 cm, calculate its dimensions.

Answer 1

1) The number is 8

2) the number is 17

3) the number is 7

4) the number is 8

5) length = 18 cm [] width = 12cm [] area = 216 sq cm

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I put alot of work in this