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3 years ago

Any one like polynomials?

Mathematics

2 answers:

victus00 [196]3 years ago

8 0

Answer:

Area: 240x² - 72x - 240

Perimeter: 64x + 28

Dimensions: l = 60, w = 50

Step-by-step explanation:

For Area:

Multiply length by width.

(12x + 24) • (20x - 10)

Let's foil this out (first, outer, inner, last)

240x² - 120x + 48x - 240

Simplify.

240x² - 72x - 240

For Perimeter

Remember that a rectangle has two sets of matching parallel sides.

Let's write out our equation.

2(12x + 24) + 2(20x - 10)

Distribute and break it down.

24x + 48 + 40x - 20

Simplify.

64x + 28

Perimeter For Given Value

Now we'll solve for if the perimeter was 220 feet.

Let's use the perimeter equation from above to find x.

64x + 28 = 220

64x = 192

x = 3

Now that we know x is 3, we'll substitute it into the equations in your question.

12(3) + 24 20(3) - 10

36 + 24 60 - 10

60 50

The length is 60ft and the width is 50 ft.

GREYUIT [131]3 years ago

6 0

Answer:

2o.x that the anwers shs

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