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3 years ago

If a rectangle is (x+2) wide and (x-7) in length, the area of the rectangle is?

Mathematics

1 answer:

Maru [420]3 years ago

3 0

Answer: x² - 5x - 14

Step-by-step explanation: Start with the formula for the area of a rectangle.

Area = length x width

To multiply these two binomials, let's use the F.O.I.L. method.

The product of the first terms is x².

The product of the outer terms is -7x.

The product of the inner terms is 2x.

The product of the last terms is -14.

So we have x² - 7x + 2x - 14 which simplifies to x² - 5x - 14.

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3 years ago

Find the sum that amounts to Rs 9,144 in 3 years at 9% per year simple interest.

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Given:

Amount = Rs. 9,144

Time = 3 years.

Rate of simple interest = 9%

To find:

The principal value.

Solution:

The formula for simple interest is:

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Putting $r=9,t=3$ in the above formula, we get

$I=\dfrac{P\times 9\times 3}{100}$

$I=\dfrac{27P}{100}$

$I=0.27P$

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$9144=P+0.27P$

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$\dfrac{9144}{1.27}=P$

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3 years ago

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Step-by-step explanation:

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Read 2 more answers

If a rectangle is (x+2) wide and (x-7) in length, the area of the rectangle is? ​

If a rectangle is (x+2) wide and (x-7) in length, the area of the rectangle is?