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jjj1931
31.07.2019 •
Mathematics
The length of a rectangle is 4 meters longer than the width. if the area is 35 square meters, find the rectangle's dimensions. round to the nearest tenth of a meter.
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Ответ:
l=w+4
a=w(w+4)
a=w^2+4w
35=w^2+4w
0=w^2+4w-35
w=4.2
l=4.2+4
l=8.2
so, the width is 4.2 meters long and the length is 8.2 meters long.
Ответ:
To decide if an integer is a rational number, we try to write it as a ratio of two integers. An easy way to do this is to write it as a fraction with denominator one. Since any integer can be written as the ratio of two integers, all integers are rational numbers