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Illusion [34]
3 years ago
9

Simplify (4x^2 + 12x - 9) + (7x^2 - x + 3)

Mathematics
2 answers:
AVprozaik [17]3 years ago
5 0

Answer:

11x^2 + 11x - 6

Step-by-step explanation:

  1. <em>Remove</em> the parenthesese.
  2. <u>Add like terms</u>, 4x^2 and 7x^2.
  3. After that, <em>subtract</em> x from 12x, that's 11x.
  4. then<em> add</em> -9 and 3, and that's -6.

Then you're left with 11x^2 + 11x - 6

I hope this helps!

jasenka [17]3 years ago
3 0

Answer:

The correct answer is 11x²  + 11x - 6

Step-by-step explanation:

The given expression is,

(4x² + 12x - 9) + (7x² - x + 3)

<u>Simplify the given expression</u>

(4x² + 12x - 9) + (7x² - x + 3) = 4x² + 12x - 9 + 7x² - x + 3

= 4x² + 7x²  + 12x - x - 9 + 3

= 11x²  + 11x - 6

Therefore the simplified form of given expression is 11x²  + 11x - 6

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AveGali [126]

Answer:

D No. as there are only 12 bolts longer than 1inch.

Mr. Slivka needs 16 bolts of greater than 1 measure, and there are only 12.

Step-by-step explanation:

We cannot include 1 inch data as this is not over 1 inch like the 1inch 2/8 and 1inch 4/8 etc. the greater measures of over 1 inch count to 12.

We know they are greater as they do not have a negative sign next to the added fraction of 1 2/8 or 1 4/8.

7 0
3 years ago
Please help!!
jenyasd209 [6]

Answer:

x = - 3

y = - 2

Step-by-step explanation:

Start with the second equation. Switch

3y = 2x               Divide by 3

3y/3 = 2x/3

y = 2x/3

Now go to the first equation. Put the value for y in the first equation.

x - 3(2x/3) = 3      Cancel the 3s on the left.

x - 2x = 3              Combine

-x = 3                    Multiply by -1

-1(-x) = 3(-1)

x = - 3

Now go back to the original equation I have called the second equation

2x = 3y

2(-3) = 3y                  Put in - 3 for x

- 6 = 3y                     Divide by 3

-6 / 3 = y

y = - 2


8 0
3 years ago
Can somebody plz help?
nekit [7.7K]

Answer:

The answer is 2.

Step-by-step explanation:

You can thank me later or a zoom meet can be OK wink

4 0
4 years ago
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Please help me with this question I’m stuck going to get this right because it’s a quiz
Leno4ka [110]

Answer: True

Step-by-step explanation:

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6 0
3 years ago
Solve the system using elimination<br><br> x + 2y = 1<br> 4x + y = 11
VashaNatasha [74]
X + 2y = 1 ______×1
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x = 3

3 + 2y = 1
2y = 2
y = 1

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3 0
3 years ago
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