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Doss [256]
3 years ago
9

If 12 + 3 = 15, what other addition fact and what two subtraction facts

Mathematics
1 answer:
pentagon [3]3 years ago
3 0
3 + 12 = 15
15 - 3 = 12
15 - 12 = 3
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A square has side length of 9 in. If the area is doubled, what happens to the side length?
Alika [10]

Answer:

The side length is multiplied by \sqrt{2}

Step-by-step explanation:

we know that

The area of the original square is equal to

A=9^{2}=81\ in^{2}

If the area is doubled

then

The area of the larger square is

A1=(2)81=162\ in^{2}

Remember that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z ----> the scale factor

x ----> the area of the larger square

y ---> the area of the original square

so

z^{2}=\frac{x}{y}

we have

x=162\ in\^{2}

y=81\ in\^{2}

z^{2}=\frac{162}{81}

z^{2}=2

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therefore

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7 0
3 years ago
Is 12 a solution to the equation × - 8 = 20? Explain how you know.
jeyben [28]

We have the following:

x-8=20

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The solution of x is equal to 28, therefore 12 is not a solution of the equation

5 0
1 year ago
Sara jumps off a diving board that is 6 feet above the surface of the water her height above the surface of the water h in feet
Flauer [41]
Well when she hits the water h=0 so

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3 years ago
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Aleksandr-060686 [28]

Answer:

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Step-by-step explanation:

lower quartile - upper quartile = answer

8 0
4 years ago
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Answer:

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Step-by-step explanation:

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