eddsworldfrantic
06.10.2019 •
Mathematics
The length of a rectangle is 11 centimeters less than three timesthree times its width. its area is 42 square centimeters. find the dimensions of the rectangle.
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Ответ:
3w-11 = l
lw = 42
This we can solve:
w(3w-11) = 42 => 3w² - 11w - 42 = 0
using the quadratic formula, you'll find that w=6.
Then l=7
Ответ:
the answer would be 0.4 for the first one 4 for the second one 0.123 for the third one and 0.0123 for the last one
Step-by-step explanation: