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Kisachek [45]
3 years ago
13

Does anyone know how to do this? please help me

Mathematics
2 answers:
Elis [28]3 years ago
8 0
On the x column, you would write 1, 2, 3, 4, and so on. Then, in the y box, you plug in that number into the equation. Write your answer in the y column. 

For example, if x = 1, then 1^2 + 2 - 8 = - 5. 
If x = 1, y= -5
e-lub [12.9K]3 years ago
6 0
Since we have 7 spaces lets use 1,2,3,4,5,6, and 7 for x:

y=1^2+2x-8
y=1+2-8
y=-5

y=2^2+4-8
y=8-8
y=0

y=3^2+6-8
y=15-8
y=7

y=4^2+8-8
y=16

y=5^2+10-8
y=27

y=6^2+12-8
y=40

y=7^2+14-8
y=49+14-8
y=49+6
y=55

The completed chart:
x | y
1 | -5
2 | 0
3 | 7
4 | 16
5 | 27
6 | 40
7 | 55





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The sum of four consecutive odd integers is -72. Write an equation to model this situation, and ind the values of the four integ
Nutka1998 [239]

Answer:

  • equation: (x-3) +(x-1) +(x+1) +(x+3) = -72
  • values: -21, -19, -17, -15

Step-by-step explanation:

When dealing with consecutive integers, it often simplifies the problem to work with their average value. We know the average value of the integers in this problem is the even integer between the middle two. We can call it x, and write the equation ...

  (x-3) +(x-1) +(x+1) +(x+3) = -72

This simplifies to ...

  4x = -72 . . . . . . . we knew this before we wrote the above equation, since the sum of 4 numbers is 4 times their average.

  x = -18 . . . . . . . . the middle number of the sequence

So, the numbers are:

  • -18-3 = -21
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A more conventional approach is to define the variable as the integer at one end or the other of the sequence. If we make it be the lowest number, then the equation is ...

  (x) +(x +2) +(x +4) +(x +6) = -72

and that simplifies to ...

  4x +12 = -72 . . . . . collect terms

  4x = -84 . . . . . . . . subtract 12

  x = -21 . . . . . . . . . . divide by 4

Now, the other three numbers are found by adding 2, 4, and 6 to this one.

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Find the mean, median, and mode(s) of the data. Choose the measure that best represents the data. Explain your reasoning. Find t
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Answer:

Mean: 17

Median: 16

Mode: 10

Step-by-step explanation:

8, 10, 10, 11, 16, 17, 19, 21, 41

Median: (the middle number in the number list/data set) 16

Mode: 10

Mean: 8 + 10 + 10 + 11 + 16 + 17 + 19 + 21 + 41 = 153/9 = 17

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2 years ago
What is 3,333,333 rounded tp
Luba_88 [7]
To the nearest tenth: 3,333,330

To the nearest hundred: 3,333,300

To the nearest thousand: 3,333,000

To the nearest ten thousand: 3,330,000

To the nearest hundred thousand: 3,300,000

To the nearest million: 3,000,000

Hope that helps :)
5 0
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