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Llana [10]
3 years ago
15

How to find the maximum or minimum value of a quadratic function?

Mathematics
1 answer:
kipiarov [429]3 years ago
6 0

Answer:

Vertex form

Step-by-step explanation:

You convert to  vertex form  a(x - b)^2 + c . The coordinates of the maxm/minm will be (b, c).

For example find minimum value of  x^2 + 5x - 6:-

x^2 + 5x - 6

=  (x + 2.5)^2 - 6.25 - 6

= (x + 2.5)^2 - 12.25

The coordinates of minimumm will be (-2.5, -12.25)  The values of the minimum of the function is -12.25

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it took Peter 3 hours to drive to his friend in Connecticut when he was driving with the average speed 54 mph.Find the constant
Vsevolod [243]

Answer:


Since k is constant (the same for every point), we can find k when given any point by dividing the y-coordinate by the x-coordinate.

so i assume it could be 162 sorry if i am wrong let me know if it is right or not

8 0
3 years ago
Please help and explain very easy good luck
Mars2501 [29]

Answer:

-76

Step-by-step explanation:

A positive digit multiplied by a negative digit will result as a negative digit.

So,

6 · -8 = -48

Now if there is a problem where a number is added by a negative digit number, you turn the "plus" sign into a "negative" sign.

So,

- 48 + (- 28)

-48 - 28

If you subtract a negative by a negative, the answer will be negative BUT you have to ADD those two negative digits together and put the negative sign after.

- 48 - 28 = -76

7 0
3 years ago
Read 2 more answers
Juanita is the self-employed owner of Juanita's Linens. Her estimated annual earnings are $73,040 and she expects to pay 27% of
adell [148]

Answer:

  $7724

Step-by-step explanation:

Her estimated quarterly income is $73,040/4 = $18,260.

Her estimated tax rate is ...

  27% + 12.4% + 2.9% = 42.3%

This tax rate applied to her estimated earnings gives an estimated quarterly tax of ...

  $18,260 × 0.423 = $7723.98

  ≈ $7724 . . . . . taxes are rounded to the nearest dollar

7 0
3 years ago
Find the y-intercept of the line that has a slope of -3 and passes through (9,0)
Ann [662]

9514 1404 393

Answer:

  27

Step-by-step explanation:

For point (x, y) and slope m, the y-intercept can be found from the equation ...

  b = y -mx

  b = 0 -(-3)(9) = 27

The y-intercept is +27. The corresponding ordered pair is (0, 27).

7 0
3 years ago
What is the opposite of -8? :D
VMariaS [17]
<h3>The answer is:</h3><h2>8</h2><h2 />

We know that the opposite of 8 is -8. So the opposite of -8 is 8.

You can look a number line if you are still confused!

8 0
3 years ago
Read 2 more answers
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