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elena-14-01-66 [18.8K]
3 years ago
15

Mr. Foster has generously donated $200 to the football team. He

Mathematics
1 answer:
MArishka [77]3 years ago
7 0

Answer:

Y=15x+200

Step-by-step explanation:

Y is the total he will have to pay at the end of the season.

X stands for the number of touchdowns they will score. Which will be multiplied by 15.

200 is the initial amount he pays.

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You know that 5^2=25. How can you use this fact to evaluate 5^4
PIT_PIT [208]

Answer:

5^4 = 625

Step-by-step explanation:

5^4 is just 25 times 25

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Four students are competing in a spelling bee. The top three students will receive a medal. How many different ways can they fin
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Answer:

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(4+2-2)(2)-5<br> -3<br> 2.<br> 3
puteri [66]
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3 years ago
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It is given that y varies inversely as x^2. If x is decreased by 50%, find the percentage change in y.
vova2212 [387]

Answer:

300%

Step-by-step explanation:

Given

y\ \alpha\ \frac{1}{x^2}

Required

Find the percentage change in y when x decreased by 50%

First, convert to equation

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

Where k is the constant of proportionality

When x decreased by 50%

Y = \frac{k}{(x - 0.5x)^2}

Y = \frac{k}{(0.5x)^2}

Y = \frac{k}{0.25x^2}

Expand

Y = \frac{1}{0.25} * \frac{k}{x^2}

Substitute \frac{k}{x^2} for y

Y = \frac{1}{0.25} * y

Y = 4 * y

Y = 4 y

The percentage change is then calculated as:

\%Change = \frac{Y - y}{y} * 100\%

\%Change = \frac{4y - y}{y} * 100\%

\%Change = \frac{3y}{y} * 100\%

\%Change = 3 * 100\%

\%Change = 300\%

<em>The percentage in y is 300%</em>

7 0
3 years ago
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