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egaitapierreval
01.06.2020 •
Mathematics
Ms. Ahmed has a rectangular garden where she grows tomatoes. The length of her garden is represented by t + 4 and the width by 2t - 1. Express the area of Ms. Ahmed's garden as a polynomial in standard form. If the area of Ms. Ahmed's garden is 56 ft2, what are the dimensions of the garden?
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Ответ:
The dimension is 8ft by 7ft
Step-by-step explanation:
Given data
Length l =![(t+4)](/tpl/images/0673/2702/ef115.png)
Width w=![(2t-1)](/tpl/images/0673/2702/88e46.png)
the area is expressed as![A= length * width](/tpl/images/0673/2702/418f2.png)
collecting like terms we have
hence our expression for area is![A= 2t^{2} +7t-4](/tpl/images/0673/2702/07b00.png)
given that the area is
to solve for the sides we need to first solve fot t
equating the expression for area to 56 we can solve for t
taking the constant term to the other side and solve we have
we can substitute two factors for 7t that when multiplied we give -60 and when added we give 7 these factors are 15 and -8
t=4 hence the length is
hence the width is
Ответ: