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lisabon 2012 [21]
3 years ago
10

Show your work solving the following equation for y. 12y-4=32

Mathematics
1 answer:
Sloan [31]3 years ago
3 0
12y - 4 = 32
+4 +4
12y = 36
divide 12 by both y and 36
y = 3



add 4 to both sides of the equation to get y alone. (keep in mind that whatever you do to one side you MUST do to the other.) next you still need to get y alone by dividing by 12 on both sides.

!! INVERSE OPERATIONS !!
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Can somebody solve this: x^4+2x^3-25x^2-26x+120
Dafna11 [192]

Answer:

 (x + 5) • (x + 3) • (x - 2) • (x - 4)

Step-by-step explanation:

Step-1 : Multiply the coefficient of the first term by the constant   1 • 15 = 15

Step-2 : Find two factors of  15  whose sum equals the coefficient of the middle term, which is   8 .

     -15    +    -1    =    -16

     -5    +    -3    =    -8

     -3    +    -5    =    -8

     -1    +    -15    =    -16

     1    +    15    =    16

     3    +    5    =    8    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  3  and  5

                    x2 + 3x + 5x + 15

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

                   x • (x+3)

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

                   5 • (x+3)

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

                   (x+5)  •  (x+3)

            Which is the desired factorization

 (x + 5) • (x + 3) • (x - 2) • (x - 4)

3 0
3 years ago
Sadie bought 9 cans of peaches for ,$12 at the rate how much would she pay for 21 cans of peaches​
storchak [24]
$27.93

You want to know how much she payed for 1 can. So you divide $12 by 9 cans. For one can, she paid $1.33. Now multiply that by 21 cans.
1.33•21=27.93
5 0
3 years ago
HELP ASAP PLS. TIMED​
stellarik [79]

Answer:

A=588

Step-by-step explanation:

4 0
4 years ago
Evaluate the expressions
likoan [24]
<h3>Answer:</h3>

1. x + 20

2. 0

3. 2x - 8

4. 95x + 10

5. -9x - 6

6. 4x + y - 5

7. -x + 6y + 5

8. x + y - 15

9. x + 4y + 4

<h3>Step-by-step explanation:</h3>

• When working with variables and numbers, you have to put the variables first (in alphabetical order) and then the numbers.

• To evaluate an algebraic expression, we find the value of the expression when the variable is replaced by a given number.

• To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations.

• When we are not given a number for the variable in the expression, we have to group like-terms.

  1. <u>Example:</u> 5x + 6 + 3x - 2 - y
  • 1st: group 5x and 3x (add the terms together) = 8x
  • 2nd: group 6 and -2 (add the terms together) = 4
  • 3rd: Since -y has no like-terms, we can't group it = -y
  • Fourth, put the terms in order (variables = alphabetical order and then numbers) = 8x - y + 4

1. 4x + 12 - 3x + 8

  • 4x - 3x = 1x = x
  • 12 + 8 = 20
  • x + 20

2. -8x + 1 + 2x - 1 + 6x

  • -8x + 2x + 6x = -8x + 8x = 0
  • 1 - 1 = 0
  • 0

3. 4x - 3 - 2x - 5

  • 4x - 2x = 2x
  • -3 - 5 = -8
  • 2x - 8

4. 100x + 5 - 5x + 5

  • 100x - 5x = 95x
  • 5 + 5 = 10
  • 95x + 10

5. -4x - 4 - 2 - 5x

  • -4x - 5x = -9x
  • -4 - 2 = -6
  • -9x - 6

6. 2x - 1 + 2x - 4 + y

  • 2x + 2x = 4x
  • -1 - 4 = -5
  • 4x + y - 5

7. 5y - x + 2y - y + 5

  • 5y + 2y - y = 5y + 1y = 6y
  • -x + 6y + 5

8. -15 + 3y - 3x - 2y + 4x

  • 3y - 2y = 1y = y
  • -3x + 4x = 1x = x
  • x + y - 15

9. 4 - 3y + 3x - 2x - y

  • -3y - y = 4y
  • 3x - 2x = 1x = x
  • x + 4y + 4

Hope I helped you, if I did can you please mark me the Brainliest?

4 0
3 years ago
The expression sqrt(50) is equivalent to
eduard

Answer:

A)5√2

Step-by-step explanation:

√50

√5²×2

√5²√2

5√2

3 0
3 years ago
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