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3 years ago

Can anyone please explain this to me

Mathematics

1 answer:

Crazy boy [7]3 years ago

5 0

What Grade even is this ..

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Explain how you could write a quadratic function in factored form that would have a vertex with an x-coordinate of 3 and two dis

Elena-2011 [213]

Answer:

$f(x) = (x + 1)(x - 7)$

Step-by-step explanation:

For a quadratic function to have a vertex with an x-coordinate of 3, then

$3 = - \frac{b}{2a}$

Let a=1, then we have

$3 = - \frac{b}{2}$

$b = - 2 \times 3 = - 6$

So now our equation becomes:

$f(x) = {x}^{2} - 6x + c$

We now find two factors of c that add up to -6.

Let these factors be 1, and c.

Then

$c + 1 = - 6$

$c = - 6 - 1 = - 7$

Therefore the factors are :

1 and -7.

The function becomes:

$f(x) = {x}^{2} - 6x - 7$

The factored form is

$f(x) = (x + 1)(x - 7)$

7 0

3 years ago

Heyyy ummm... help??

atroni [7]

The statements true for the given function are:

$f(0) = \frac{3}{2}$
$f(4) = \frac{7}{2}$

I tried them all and these two were correct, their solutions are as follows:

= f(x) = 1/2x + 3/2

= f(0) = 1/2 × 0 + 3/2

= f(0) = 0 + 3/2

= f(0) = 3/2

= f(x) = 1/2x + 3/2

= f(4) = 1/2 × 4 + 3/2

= f(4) = 2 + 3/2

= f(4) = 4+3/2

= f(4) = 7/2

So, that's how these two are correct.

7 0

3 years ago

Read 2 more answers

Simplify 16a divided by 4ab

zimovet [89]

Answer:

4b^-1

Step-by-step explanation:

16a/4 = 4a

4a/a = 4

4/b = 4b^-1

5 0

3 years ago

Read 2 more answers

A retirangle has an area of 40 units.the lenght is 6 units greater then the width

slega [8]

40 units multiply by 6 units equal 240 units

3 0

3 years ago

Read 2 more answers

Need Help ASAP

iren2701 [21]

The sum of the interior angles of a triangle is 180 degrees

2x-9+3x+x+3=180
6x-6=180
6x=186
x=31

A=2(31)-9
A=62-9
A=53

8 0

3 years ago

Can anyone please explain this to me​

Can anyone please explain this to me