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Sergio039 [100]
2 years ago
13

Find the Area of the shaded part.

Mathematics
1 answer:
Westkost [7]2 years ago
4 0

To find the area of the shaded part we have to subtract the rectangle area from the triangle area :

s =  \frac{1}{2}  \times (8x + 2)(6x) - (x)(3x + 1) \\

s =  \frac{1}{2}  \times (48 {x}^{2}  + 12x) - (3 {x}^{2}  + x) \\

s =  \frac{48}{2}  {x}^{2}  +  \frac{12}{2} x - 3 {x}^{2}  - x \\

s = 24 {x}^{2}  + 6x - 3 {x}^{2}  - x

s = 24 {x}^{2}  - 3 {x}^{2}  + 6x - x

s = 21 {x}^{2}  + 5x

And we're done

Have a great day ♡

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Alekssandra [29.7K]

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A backyard pool has a concrete walkway around it that is 5' wide on all sides the total area of the pool and the walkway is 950'
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Total area of the pool with walkway = 950 square feet

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Area = length * width = 950

Equate the length and width

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Using the  FOIL method, we have;

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collect like terms

x² + 28x - 770 = 0

Thus, the dimensions of the pool would give a quadratic equation x² + 28x - 770 = 0

Learn more about area of a rectangle here:

brainly.com/question/14137384

#SPJ1

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