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Arlecino [84]
3 years ago
9

The complete factorization of -12x^3 + 14x^2 +6x is -2x(ax + 1)(2x-3). What is the value of a?

Mathematics
1 answer:
tester [92]3 years ago
4 0

Answer:

a = 3

Step-by-step explanation:

-12x³+14x²+6x = -2x(ax+1)(2x-3)

<em>Divide both sides by -2x(2x-3)</em>

\frac{-2x(ax+1)(2x-3)}{-2x(2x-3)} = - \frac{12x^{3} }{-2x(2x-3)} + \frac{14x^{2} }{-2x(2x-3)} +\frac{6x}{-2x(2x-3)}

ax+1=3x+1

<em>Subtract 1 from both sides</em>

ax=3x

<em>Divide both sides by x</em>

a=3

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Answer:

B

Step-by-step explanation:

2x+8=9

you want to isolate the variable so you subract 8 from both sides

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now you want x by itself so you divide by 2 on both sides

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There are 2 girls and 3 boys on a camping trip. What is the ratio of girls<br> to boys on the trip?
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3 years ago
I don't understand this plz help explain how to do it
podryga [215]

Answer:

1. U. 190

2.U. 155

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Step-by-step explanation:

Explanation: To find an angle of a triangle we add the angles we know about

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We know that Angles of triangles should add up to 360

So to find the third angle we add the angle we know about.

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Read 2 more answers
10. Marcelle uses a total of 6 plates to add 110
madam [21]

Answer:

Marcelle will use 4 plates of the 25 lb & 2 plates of the 5 lb to fabricate the 110 lb weight lifting bar.

Step-by-step explanation:

There are 6 plates which consist of 25 lb plates and 5 lb plates.

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Thus, 25 x 4 = 100... 4 plates of 25 pounds.

5 x 2 = 10 ... 2 plates of 5 lbs.

100+10= 110, which is our goal! And a total of 6 plates were used!

All things put into great consideration, Marcelle will use 4 plates of the 25 lb & 2 plates of the 5 lb to fabricate the 110 lb weight lifting bar.

I hope this helped!

~ Penny

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3 years ago
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