sherlynl sherlynl

23-10-2019
Mathematics

contestada

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

Respuesta :

danran4secretaryusa danran4secretaryusa

23-10-2019

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)

Answer Link

Otras preguntas

Please help WIth all 3 i need help

From a resting place, a bushwalker hikes due north for 1.5km to a waterhole and then on a bearing of 315° for 2km to base camp. a Find how far west the base cam

What is intuitive writing

A telegraph pole casts a shadow of 40 feet long when the angle of elevation for the sun is 63°. the pole leans 15° from the vertical, directly toward the sun. f

Match up macromolecules with example. a. carbohydrates __cholesterol or fat b. proteins __dna or rna c. lipids __hemoglobin or enzyme d. nucleic acids __glycoge

what is 14% of 40? Please give me an answer.

Identify the elemant that is a nonmetal , a gas, and has an element symbol that starts with the letter a

Which question would help a team build ideas? Why can't you do all the work? What can we do to avoid working? What do you think about this? Why did we get p

Vessel that transports deoxygenated blood from lower parts of the body returns to the right atrium via the

Damage to the ________ lobe can result in apathetic behavior or increased argumentative behavior.