3 years ago

Aurora has a cell phone plan that charges $65 for phone service

Mathematics

1 answer:

Tems11 [23]3 years ago

7 0

Answer:

interesting

Step-by-step explanation:

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Helga [31]

First note that $x\ge0$ ; otherwise $\sqrt{2x}$ is undefined as long as we're only looking for real solutions.

We can write

$\sqrt{2x}+12=x+8$
$\sqrt{2x}=x-4$
$2x=(x-4)^2$
$2x=x^2-8x+16$
$x^2-10x+16=0$
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$\implies x=8,x=2$

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Vesnalui [34]

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step-by-step explanation:

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sveticcg [70]

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Step-by-step explanation:

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The value of x + y is negative, and x is a positive integer. What must be true about y? Explain.

sergey [27]

Answer:

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Step-by-step explanation:

Use this equation as an example: 5 + -7 = negative

If you add both of them you end up with -2

-2 is a negative integer

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