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3 years ago

The perimeter of a rectangular painting is 280 centimeters. If the length of the painting is 76 centimeters, what is its width?

Mathematics

2 answers:

Katyanochek1 [597]3 years ago

8 0

Answer:

the width is 64cm

Step-by-step explanation:

a rectangle has 4 sides, each set of opposite sides are congruent, perimeter is the distance around an object, so we need to add up all 4 sides and it should equal 280cm, we know one side is 76, so our equation should look as follows:

76 + x + 76 + x = 280

2x + 152 = 280

2x = 128

x=64

you can check the answer but substituting 64 for x and seeing if it comes out to 280

76+64+76+64=280

280=280

g100num [7]3 years ago

4 0

Answer:

76x2 = 152

280 - 152 = 128

128 ÷ 2 = 64

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