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ashleyacosta
09.11.2020 •
Mathematics
The length of a rectangle is three meters less than twice its width. If the perimeter of the rectangle is 66 meters, find its dimensions. Write your answer as two numbers separated by a comma
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Ответ:
assume it's width as 'x'
So, it's length is '2x-3'
and the perimeter is equal to 66m
Step-by-step explanation:
So,equalize the equation
x + (2x-3) + x + (2x-3) = 66
remove the brackets
2x + 4x - 6 = 66
add 6 to both sides
6x = 60
x = 60 ÷ 6
= 10
so, the length is 2x-3 = 20 - 3 = 17 m
and the breadth is x = 10 m
Ответ:
yes she will have enough money for the DVD and the TV she wants to buy