Question

The perimeter of a playing card is 34 centimeters. It is 10 centimeters tall. How wide is it

Answer 1

Answer:7

Step-by-step explanation: 10 +10 +x+x=34

                                               20+2x= 34

                                               -20            20

                                                       2x=14  x=7

Answer 2

Answer:  its width is 7cm

Step-by-step explanation:

The perimeter of a rectangle is the sum of twice its length plus twice its width.

perimeter = 2·length + 2·width

34centimeters = 2·10cm + 2·width

width = (34cm -20cm)/2 = 14cm/2 = 7cm

Answer: its width is 7cm

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