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3 years ago

Match the equation to the graph where n is the Number of Burgers and C is the cost.

Mathematics

2 answers:

Softa [21]3 years ago

7 0

Answer:

How did life during the Industrial Revolution differ in the North and the South?

In what ways did the Industrial Revolution make life better?

How did it make life more difficult? How did life during the Industrial Revolution differ in the North and the South?

In what ways did the Industrial Revolution make life better?

How did it make life more difficult?

Step-by-step explanation:

lions [1.4K]3 years ago

3 0

I tnink igz the haowp?

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3 years ago

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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