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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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Answer:

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This is a simple interest problem.

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$T = E + P$

In this question:

We divide in two intervals, the first year and the second year. We have to know that the amount after the end of the first year is the principal at the start of the second year.

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Amount of 2% interest, during 1 year.

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