4 years ago

Find the axis of symmetry and the vertex of the graph of f(x) = -5x^2 +20x -9.

Mathematics

1 answer:

Sophie [7]4 years ago

7 0

Answer:

Axis of Symmetry:

x=2

Vertex:

(2,11)

Step-by-step explanation:

Finding the derivative:

f'(x)=-10x+20

Setting the slope equal to zero:

-10x+20=0 x-2=0 x=2

Finding vertex:

f(2)=-5*(2)^2+20*2-9

=-20+40-9=20-9=11

(2,11)

You might be interested in

-10x—16=14<br> -16x -6 = 14

Alla [95]

Answer: No solution

Step-by-step explanation:

-10x-16=14

-16x-6=14

-10x-16=-16x-6

-10x+16x-16=-16x+16x-6

6x-16=-6

6x-16+16=-6+16

6x=10

x=10/6

x=5/3

-16(5/3)-6=

-80/3-6*3/3=

-80/3-18/3=

(-80-18)/3=-98/3 $\neq$ 14

Hence, there is no solution

4 0

2 years ago

Find the value of this expression if x= -6 and y=1. xy^2/-7

Ahat [919]

(-6)(1)∧⁽2/-7⁾= -6 is the answer
Hope it's right

8 0

3 years ago

Read 2 more answers

HELP PLS IS DUE TODAY PLS!!

LenKa [72]

Sorry it’s so sloppy, hope it helps

6 0

3 years ago

PLEASE PLEASE HELP!!! Figure 1 is dilated to get figure 2. What is the scale factor? Figure 1 is the smaller figure and has a 6

Xelga [282]

The answer is 1.5

Hope this helps!!

6 0

3 years ago

I have something to say. Some people like Feluka and other people are posting links. THESE ARE VIRUSES. They will ask for your p

Murrr4er [49]

Answer:

Don't worry :)

Step-by-step explanation:

I have informed the employees and other users of brainly saying that these websites are fake and they scam you for your usernames and passcodes but what I want to say is that not to trust these websites.

Have a good day/night :)

6 0

3 years ago