3 years ago

3(2x^2+5)-12 for x is 3

Mathematics

1 answer:

dedylja [7]3 years ago

5 0

3(2x^2+5)-12

3(2x^2)= 6x^2

3(5) = 15

6x^2+15-12

6x^2+3

Plug in the x

6(3)^2+3

Exponent first so 3^2 is 9

6(9)+3

54+3

57 is the answer.

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Which equations represent the line that is parallel to 3x − 4y = 7 and passes through the point (−4, −2)? Check all that apply.

jonny [76]

First, we find the slope of the given line.

3x − 4y = 7

-4y = -3x + 7

y = (3/4)x - 7/4

The slope of the given line is 3/4.
The slope of the parallel line is also 3/4.

Now we need the equation of the line that has slope 3/4 and passes through point (-4, -2),

We use the point-slope form of the equation of a line.

y - y1 = m(x - x1)

y - (-2) = (3/4)(x - (-4))

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3 years ago

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cricket20 [7]

Answer:

Step-by-step explanation:

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3 0

3 years ago

Read 2 more answers