3 years ago

What is the correct not sure if I'm coming up with the correct one

Mathematics

1 answer:

Gennadij [26K]3 years ago

3 0

I think it's C but I might not be right

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Solve for the equation, show all your work. This is an absolute value equation. You need to show both equations and the work for

VMariaS [17]

Answer:

$x=-1$ or $7$

Step-by-step explanation:

We use casework on when $3x-9=12$ and when $3x-9=-12$ .

For the first case, $3x-9=12$ , we add 9 to both sides to get

$3x=21$ .

Dividing both sides by 3 gives

$x=7.$

For the second case, $3x-9=-12$ , we add 9 to both sides to get

$3x=-3$ .

Dividing both sides by 3 gives

$x=-1$ .

Checking both cases, we plug in $x=7$ and $x=-1$ .

For the first case, we have $|3(7)-9|=|21-9|=|12|=12$ , which satisfies the equation.

For the second case, we have $|3(-1)-9|=|-3-9|=|-12|=12$ , which also satisfies the equation.

This gives us two solutions to the equation; $x=7$ and $x=-1$ .

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1 year ago

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Feliz [49]

Answer: ok

Step-by-step explanation:

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2 years ago

What is the value of f(x) when x=3? -3 o -2 o 1 O

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The answer is -3 darling

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3 years ago

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lisov135 [29]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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