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Margaret [11]
3 years ago
6

Jon walked 90 feet in 10.4 seconds. What is his speed in miles per hour? (1 mi=5280 ft)

Mathematics
1 answer:
ololo11 [35]3 years ago
5 0

90/5280 = 10.4/x

Solve for x.

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4x

Step-by-step explanation:

it will always be the Number beside the variables

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Andru [333]

Answer:

Option A.

Step-by-step explanation:

Consider the given problem is

3\sqrt{\frac{7}{25}}-\sqrt{\frac{28}{25}}+\sqrt{\frac{63}{25}}

Using the properties of radical expressions we get

3\cdot \frac{\sqrt{7}}{\sqrt{25}}-\frac{\sqrt{28}}{\sqrt{25}}+\frac{\sqrt{63}}{\sqrt{25}}             [\because \sqrt{\frac{a}{b}}=\frac{\sqrt{a}}{\sqrt{b}}]

3\cdot \frac{\sqrt{7}}{\sqrt{25}}-\frac{\sqrt{4}\sqrt{7}}{\sqrt{25}}+\frac{\sqrt{9}\sqrt{7}}{\sqrt{25}}              [\because \sqrt{ab}=\sqrt{a}\sqrt{b}]

3\cdot \frac{\sqrt{7}}{5}-\frac{2\sqrt{7}}{5}+\frac{3\sqrt{7}}{5}

Taking out common factors.

\frac{\sqrt{7}}{5}(3-2+3)

\frac{\sqrt{7}}{5}(4)

\frac{4\sqrt{7}}{5}

The simplified form of given expression is \frac{4}{5}\sqrt{7}

Therefore, the correct option is A.

4 0
3 years ago
What does B(0) = 0 mean
MissTica

Answer:

It means <u>what is the y-value of the given function, if 0 is substituted in for x.</u>

Hope this helps!

3 0
3 years ago
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We take the equation
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<span>                                            (x-2)^2 - 4 + (y+3)^2 - 9 = -12</span>
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4 0
3 years ago
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Answer:

Aprox 190 inch2

Step-by-step explanation:

A = [Pi*r^2]/2

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A = 189.97 inc2

Best regards

3 0
3 years ago
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