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Alex
3 years ago
9

Which choice answer is it?

Mathematics
1 answer:
Debora [2.8K]3 years ago
8 0

Your answer would be option (1) -3x² - 18x + 19.

To find this we need to substitute in the G and F expressions into G - 3F and see what the outcome is, as this will give us the answer.

First I’m going to multiply the F expression, 2x² + 6x - 5, by 3:

3 × (2x² + 6x - 5) = 3(2x²) + 3(6x) - 3(5) = 6x² + 18x - 15.

Now we need to subtract this expression from G, which is 3x² + 4, which I will do by term:

3x² - 6x² = -3x²

0x - 18x = -18x

4 - -15 = 19

So therefore overall your answer is -3x² - 18x + 19.

I hope this helps! Let me know if you have any questions :)

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katrin2010 [14]
Are you sure this question is correct? It would be a decimal of 34.5 girls
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3 years ago
jane is twice as old as Barbara. Michael is 7 years older than Jane. If Michael is 21, which equation could be used to find Barb
dedylja [7]

Step-by-step explanation:

J = 2b

M = J + 7

M = 21

J = 21 - 7

J = 14

B = 7

<em>Equation:</em>

If M is J+7, so then J = 21-7. J is 2*b, so 2*b = 21-7. Then you subtract and divide.

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2 years ago
What is 3 x 3 1/4 x 3 3/4
likoan [24]

Answer:36.5625

Step-by-step explanation:

Hope this helped!

<!> Brainliest is appreciated! <!>

4 0
3 years ago
HELP PLZZ ASAP !! a. The value of x is 6 , what is the value of y?
erastovalidia [21]

Answer:

a). y = 4.5

b) Scale factor = \frac{3}{4}

Step-by-step explanation:

a). Since, polygon Q is the scaled copy of polygon P

    Both the figures will be similar.

    Therefore, their corresponding sides will be proportional.

    \frac{x}{y} =\frac{4}{3}

    If x = 6,

    \frac{6}{y} =\frac{4}{3}

    y = \frac{3\times 6}{4}

    y = 4.5

b). Since, polygon Q is the scaled copy of polygon P,

    Polygon Q will be the image of preimage polygon P.

    Scale factor = \frac{\text{Length of a side of the image}}{\text{Length of a side of the preimage}}

                         = \frac{3}{4}

6 0
3 years ago
What is the perimeter of the actual garden?
Lilit [14]

Answer: 576 inches or 48 feet

Step-by-step explanation:

set up a proportion where \frac{drawing AB}{actual AB} =\frac{drawing perimeter}{actual perimeter}

so you get drawingAB = 24 in

actualAB = 18 feet = 18 * 12 in = 216 in

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so plug these in to get\frac{24}{216} =\frac{64}{actual perimeter}

rearrange to get actual perimeter = \frac{216 * 64}{24}

and solve to get 576 inches or 576/12 = 48 feet

4 0
3 years ago
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