3 years ago

What is the solution to the system of equations below?

Mathematics

1 answer:

Nady [450]3 years ago

8 0

A))))))(9,3)
if u have any doubts ask me
please mark as brainliest

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3 years ago

Lucy earns money babysitting. Her earnings and hours worked represent a direct variation. She worked for 4 hours and earned $25.

SashulF [63]

For this case we have that by definition, a direct variation is given in the form:

$y = kx$

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k: It is the constant of proportionality

According to the statement we have to:

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Substituting:

$25 = k4\\k = \frac {25} {4}$ $k = 6.25\ for\ \frac {dollars} {hour}$

On the other hand we have:

$y = 4\\x = 25\\4 = k25\\k = \frac {4} {25}$

$k = 0.16\ for\ \frac {hours} {dollar}$

Answer:

$k = 6.25 for \frac {dollars} {hour}\\k = 0.16 for \frac {hours} {dollar}$

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