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AnnZ [28]
3 years ago
5

(у-4) (3x+5y-2) How do I multiply the following expression?​

Mathematics
1 answer:
muminat3 years ago
3 0

Answer:

3xy + 5y^{2}  - 12x - 22y + 8

Step-by-step explanation:

You will use the FOIL method, which is very similar to the distributive property.

In order to do multiply correctly, multiply the y by 3x, 5y, and -2. You should get:

3xy + 5y^{2}  - 2y

Then multiply the -4 by 3x, 5y, and -2 where you should get:

- 12x - 20y + 8

By using the foil method, you got rid of the parentheses. Now you can simply combine like terms and get your final answer:

3xy + 5y^{2} - 12x - 22y + 8

I hope this helps you!

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An oblique cylinder has a diameter of 14 units. The volume of the cylinder is 1,176 cubic units. what is the height of the cylin
Yanka [14]

9514 1404 393

Answer:

 about 7.64 units

Step-by-step explanation:

The volume is given by the formula ...

  V = πr²h

Then the height is ...

  h = V/(πr²) = 1176/(π·7²)

  h ≈ 7.64 . . . . units

6 0
3 years ago
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Mr.rodriguez bought 420 pencils for the school.if there are 10 pencils In each box how many boxes are there'
Sophie [7]

420 \div 10 = 42
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What is the rule for the function whose graph is shown?
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The curve can be described by
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4 0
4 years ago
Hiiiiii peoples<br><br> Solve the inequality 6x^2-x&lt;2 please show all steps
Orlov [11]

Answer:(3x−2)⋅(2x+1)

Step-by-step explanation:

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x2"   was replaced by   "x^2".  

STEP

1

:

Equation at the end of step 1

 ((2•3x2) -  x) -  2

STEP

2

:

Trying to factor by splitting the middle term

2.1     Factoring  6x2-x-2  

The first term is,  6x2  its coefficient is  6 .

The middle term is,  -x  its coefficient is  -1 .

The last term, "the constant", is  -2  

Step-1 : Multiply the coefficient of the first term by the constant   6 • -2 = -12  

Step-2 : Find two factors of  -12  whose sum equals the coefficient of the middle term, which is   -1 .

     -12    +    1    =    -11  

     -6    +    2    =    -4  

     -4    +    3    =    -1    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -4  and  3  

                    6x2 - 4x + 3x - 2

Step-4 : Add up the first 2 terms, pulling out like factors :

                   2x • (3x-2)

             Add up the last 2 terms, pulling out common factors :

                    1 • (3x-2)

Step-5 : Add up the four terms of step 4 :

                   (2x+1)  •  (3x-2)

            Which is the desired factorization

Final result :

 (3x - 2) • (2x + 1)

4 0
4 years ago
-4x^4 - 3x^3 - 29x^2 - 114 where x= -4
tatiyna

Answer: -1410

Step-by-step explanation:

Let's start by subbing in -4 for x

-4x^4 - 3x^3 - 29x^2 - 114\\-4(-4)^4-3(-4)^3-29(-4)^2-114

Now we can solve

-4(256)-3(-64)-29(16)-114\\-1024--192-464-114\\-832-464-114\\-1296-114\\-1410

5 0
3 years ago
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