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mezya [45]
2 years ago
5

The length of a rectangle is 9.7cm more than 4 times the width. If the perimeter is 91.4cm, what are it's dimensions?

Mathematics
2 answers:
gogolik [260]2 years ago
5 0

Answer:

Width of the rectangle = 7.2 cm

Length of the rectangle = 4x + 9.7

                           ?????          = 28.8 + 9.7

                            ?????         = 38.5 cm

I don't understand the last 2 part. Please help me. what are the = too? x?

barxatty [35]2 years ago
4 0
Let us assume the width of the rectangle = x
Then Length of the rectangle = 4x + 9.7
Perimeter of the rectangle = 91.4 cm
Then
91.4 = 2[x + 4x + 9.7]
91.4 = 2[5x + 9.7]
91.4 = 10x + 19.4
91.4 - 19.4 = 10x
10x = 72
x = 7.2
So
Width of the rectangle = 7.2 cm
Length of the rectangle = 4x + 9.7
                                      = 28.8 + 9.7
                                      = 38.5 cm
angelx
2 years ago
and the things on the blank are?
angelx
2 years ago
And where did you get the 5 from? on 91.4 = 2[5x + 9.7]
angelx
2 years ago
nvm
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