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zheka24 [161]
3 years ago
11

Matt walked 1 mile in 15 minutes. At this rate, how many miles would he walk in 2 hours?

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
3 0
I think the answer is 8
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2/1 or 2

Step-by-step explanation:

You go up 6 and over 3 simplify 6/3 to 2/1=2

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Suppose you have 30CD's. You know that you have 11 more CD's than your friend. Write and solve an equation to find the number of
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John is going on a trip and the country he is traveling to uses the Celsius scale. He is curious about converting Celsius temper
Setler79 [48]

Answer:

f(x)=\dfrac{9}{5}x+32 converts Celsius to Fahrenheit.

g(x)=\dfrac{5(x-32)}{9} converts Fahrenheit to Celsius.

Step-by-step explanation:

Write given data in the table

\begin{array}{cc}x&f(x)\\^{\circ}\text{C}&^{\circ}\text{F}\\20&68\\30&86\end{array}

Let the expression for the function be

f(x)=ax+b

Note, that this equation is linear equation and it is well-known fact that the Celsius to Fahrenheit dependence is linear.

Substitute corresponding values into this expression:

68=20a+b\\ \\86=30a+b

Subtract these two equations:

86-68=30a-20a\\ \\10a=18\\ \\a=\dfrac{9}{5}

Substitute it into the first equation:

68=20\cdot \dfrac{9}{5}+b\Rightarrow b=68-36=32

So,

f(x)=\dfrac{9}{5}x+32

This is the function which converts Celsius to Fahrenheit.

And function

g(x)=\dfrac{5(x-32)}{9} converts Fahrenheit to Celsius.

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3 years ago
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Janet’s savings account has $12.10 more than the $242 it had at the beginning of the year. What percent more was in the savings
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5% is the answer!! :)
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