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tigry1 [53]
2 years ago
8

Find the solution by graphing or from the graph y=x2-2x-8 how do you do this?

Mathematics
1 answer:
Tomtit [17]2 years ago
3 0

Answer:

-2 and 4

Step-by-step explanation:

Graph it using a graphing calculator.  The solutions are the points where the graph crosses the x-axis.

I attached a photo of the graph, you can see that the graph crosses the x-axis at points -2 and 4

These are the solutions!

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Which decimal is equivalent to 56?
Akimi4 [234]

Answer:

0.56

Step-by-step explanation:

7 0
3 years ago
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A football team won 16 games last year. This year the team won 20 games. What is the percent increase in the number of games the
lana66690 [7]

Answer:

25%

Step-by-step explanation:

The increase is 4 games and 4x4=16. +4 would be adding 25 percent

4 0
2 years ago
The solution to a quadric equation are x=2 and x=7. If k is a nonzero constant which of the following must be equal to the quadr
nikklg [1K]

Answer:

The quadratic equation form is x² - 9 x + 14  = 0            

Step-by-step explanation:

Given in the question as ,

The solution of quadratic equation are x = 2   and x = 7

The constant K is a non-zero number

Now , let the quadratic equation be , ax² + bx + c = 0

And  sum of roots = \frac{ - b}{a}

       product of roots = \frac{c}{a}

So, 2 + 7 = \frac{ - b}{a}

Or, 2 × 7 =  \frac{c}{a}

I.e \frac{ - b}{a}  = 9     ,     \frac{c}{a} = 14

Or,  b =  - 9 a           And c = 14 a

Put this value of b and c in standard form of quadratic equation

I.e ax² + bx + c = 0

Or, ax² - 9 ax + 14 a = 0

Or , a ( x² - 9 x + 14 ) = 0  

∴ a = 0   And  x² - 9 x + 14 = 0

Hence ,  The quadratic equation form is x² - 9 x + 14  = 0      Answer

7 0
2 years ago
What is 1/2 of 5 ?Don't forget to explain!!please
serg [7]

Answer:2.5

Step-by-step explanation:

5 is a odd number which means it's a little harder to divide but when you do, you get 2.5

1

2.5

2.5

------

5.0 = 5

3 0
2 years ago
1. y &gt; 2x + 3 graph it, <br> 2. 3x + y = 4 and x - y = 0, solve for x.
kirza4 [7]

Answer:

  1. see the attachment
  2. (x, y) = (1, 1)

Step-by-step explanation:

1. Since you have y > ..., the boundary line is dashed and the shading is above it (for y-values greater than the values on the line). The boundary line is ...

  y = 2x+3

which has a y-intercept of 3 and a slope (rise/run) of 2. A graph is attached.

__

2. You can add the two equations to eliminate y:

  (3x +y) +(x -y) = (4) +(0)

  4x = 4

  x = 1

  1 - y = 0 . . . . substitute into the the second equation

  1 = y . . . . . . . add y

The solution is (x, y) = (1, 1).

8 0
3 years ago
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