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SVEN [57.7K]
3 years ago
10

Pre cal/cal master needed

Mathematics
1 answer:
weqwewe [10]3 years ago
5 0
Take x-2 and insert it into 2x^2 + 3x-2 where the x is located 
2x^2 + 3x-2
2(x-2)^2 + 3(x-2)-2

Now work out 2(x-2)^2 + 3(x-2)-2 also follow PEMDAS
2(x-2)^2 + 3(x-2)-2 
Since (x-2)^2 is an Exponent, lets work with that first and expand (x-2)^2.
(x-2)^2
(x -2)(x-2)
x^2 -4x + 4
Now Multiply that by 2 because we have that in 2(x-2)^2
(x-2)^2  =  x^2 -4x + 4
2(x-2)^2  =  2(x^2 -4x + 4)
2(x^2 -4x + 4) = 2x^2 - 8x + 8
2x^2 - 8x + 8

Now that 2(x-2)^2 is done lets move on to 3(x-2).

Use the distributive property and distribute the 3
3(x-2) = 3x - 6

All that is left is the -2 

Now lets put it all together 
2(x-2)^2 + 3(x-2)-2

2x^2 - 8x + 8 + 3x - 6 - 2

Now combine all our like terms 
2x^2 - 8x + 8 + 3x - 6 - 2
Combine:  2x^2      =  2x^2 
Combine: -8x + 3x  =  -5x
Combine:  8 - 6 - 2 =   0

So all we have left is
2x^2 - 5x





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The ratio of orange juice concentrate to water that Zoe used to make orange juice yesterday was 3 : 7. She used 14 ounces if wat
Inessa05 [86]

Answer:

12:28

Step-by-step explanation:

yesterday the ratio would be 6:14 so then you double that to get 12:28

6 0
2 years ago
What value of "a" makes the system 3x-y=17 and ax+y=-7 have no solution?
Norma-Jean [14]

Answer:

y=-7-ax

3x-(-7-ax)=17

3x+7+ax=17

3x+ax=10

x(3+a)=10

x=10,3+a=10 a=10-3 a=7

5 0
3 years ago
Adam riese developed the signs + and - as mathematical operations what is the title of the work that introduced them?
Phoenix [80]

The title of the work introduced is Rechnung nach der lenge/auff den Linien und Feder.

<h3>What are mathematical operations?</h3>

In mathematics, an operation is a function that takes zero or more input values to a well-defined output value.

Adam Riese developed the signs + and - as mathematical operations and the title of the work introduced is Rechnung nach der lenge/auff den Linien und Feder.

Learn more about operations on:

brainly.com/question/20408113

#SPJ1

7 0
2 years ago
The following table shows the number of innings pitched by each of the Greenbury Goblins' starting pitchers during the Rockbotto
Lady_Fox [76]

Answer:

The number of innings Brantley pitched is 7.

Step-by-step explanation:

We are given that the table shows the number of innings pitched by each of the Greenbury Goblins' starting pitchers during the Rockbottom Tournament below;

         Pitcher                           Number of innings pitched

          Calvin                                            11

          Thom                                             12

          Shawn                                            7

            Kris                                               3

         Brantley                                           x

Let the number of innings Brantley pitched be 'x'.

The mean of the following data set is given by the following formula;

          Mean = \frac{\text{Sum of all data values}}{\text{Total number of observations}}

                  8 = \frac{11+12+7+3+x}{5}

                 8\times 5 =33+x

                 40 = 33+x

                  x = 40 - 33 = 7

Hence, the number of innings Brantley pitched is 7.

8 0
3 years ago
Read 2 more answers
There are 205 total students in a school. 20% of the students are 5th
Slav-nsk [51]

Answer:

41 students

Step-by-step explanation:

20% of 205 is 41

7 0
2 years ago
Read 2 more answers
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