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11.04.2020 •
Mathematics
An architect wants to build a scale model of a building that is in the shape of a rectangular prism. The building has a height of 45 ft., a width of 90 ft., and a length of 300 ft. The scale model is 10% of the size of the building based off its length and width, so the length of the scale model is and the width of the scale model is
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Ответ:
Since, the area of the rectangular base =
We have to determine the width if length is (3x+1)
Let us split the middle terms of the given equation to find its factors.
Taking common from first, second and third, fourth terms.
= 3x(4x-5)+1(4x-5)
= (3x+1) (4x-5)
Since, (3x+1) is the length of the rectangular base.
Therefore, the width of the rectangular base is (4x-5) units.
Now, Volume of the rectangular prism is given by the polynomial
We have to find width and height.
Let x = - in the given equation of volume.
We get as,
-135+135=0
Hence, (3x+1) is a factor of the given volume polynomial.
Now, performing long division of the given polynomial by (3x+1),
we get factors as (4x-5) and (2x-3).
So, the width is (4x-5) units and height is (2x-3) units.
Ответ: