What is the axis of symmetry of the function f(x)= -(x+9)(x-21)

Mathematics

1 answer:

tamaranim1 [39]3 years ago

5 0

Answer:

The axis of symmetry is x = 6

Step-by-step explanation:

To find this, first find the two x-intercept values and then take the average. This will always be the line of symmetry.

x + 9 = 0

x = -9

x - 21 = 0

x = 21

Now take the average of these two numbers.

(-9 + 21)/2

12/2

You might be interested in

Help it’s 20 points!! Of a exit ticket!.

natka813 [3]

X=1/2,-3 is the answer

7 0

3 years ago

What is 960 divided by 8 long divison

Llana [10]

It is 120 because first 8 goes into 96 which is 12. just add the 0 since u cant do anything else and it’s 120.

5 0

2 years ago

Read 2 more answers

What do you call a characteristic of a living thing that helps it survive?

WINSTONCH [101]

Answer:

An adaptation is a characteristic that helps a living thing survive and reproduce. True Natural selection is a change in the characteristics of living things over thing

6 0

2 years ago

Help pls :’( ASAPP!!!<br> “Complete the proof”

nata0808 [166]

1) $\overline{AB} \cong \overline{CD}$ , $\overline{AD} \cong \overline{CB}$ , $\overline{AX} \perp \overline{BD}$ , $\overline{CY} \perp\overline{BD}$ (given)