Aphotocopier increased the sides of a square in the ratio 4: 5.
by what percentage are the sides increased?

The sides are increased by a percentage of 25%

Step-by-step explanation:

Let

x -----> the length side of the original square

y ----> the length side of the increased square

we have

the increase is calculated by subtracting x from y

so

Remember that

therefore

The sides are increased by a percentage of 25%

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

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step-by-step explanation: