3 years ago

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

the only difference between an isosoleces trapezoidand parallel trapezoid are that the non-parellel sides are congruent

ludmilkaskok [199]

Is this a true or false type of question

4 0

3 years ago

Solve the system of equations by substitution. Show all work neatly on your work page. Checking your answer is wise. :) Plz need

vivado [14]

Answer: x = 1

3x + 4 = 7

subtract 4 from both sides

3x = 3

x = 3/3 = 1

7 0

3 years ago

Can someone answer this asap?

IgorLugansk [536]

Answer:

145

Step-by-step explanation:

six can go into eight once with a remainder of two, next you bring down the seven and you will get twenty seven, six can go into twenty seven four times six by four is 24,27 take away 24 is 3 then you bring down the one, six can go into 31 five times, six by five is 30, 31 take away 30 is one