Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 87465: 2) For the function y = x2 - 6x + 8, perform the following tasks:
a) Put the function in the form y = a(x - h)2 + k.
Answer:
Show work in this space.
b) What is the equation for the line of symmetry for the graph of this function?
Answer:
c) Graph the function using the equation in part a. Explain why it is not necessary to plot points to graph when using y = a (x - h) 2 + k.
Show graph here.
Explanation of graphing.
d) In your own words, describe how this graph compares to the graph of y = x2?
Answer:
Click here to see answer by stanbon(75887)  |
Question 87296: a firework is luanched upward into the air. at 240ft above the ground. it burst into a shower of stars. how long does it take to reach 240ft? to find the answer, use the equation h=-16t^2+32t in which (h) is the hight above the ground at time (t) in seconds.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 87732: I am having a very difficult time solving this quatratic equation, any help you can provide would be greatly appreciated!
(x-4)^2 = 3.
I have worked it over a couple of times and I have ended up with the answer: 4+/- sqrt.5 (is that right?)
Thank you!
Click here to see answer by tutor_paul(519)  |
Question 87764: The quadratic function that models the fireworks’ height s(x) in feet x seconds after they are launched is given by the equation s(x) = -16x^2+200x + 4. When should the fireworks explode so that they go off at the greatest height? What is that height? [Hint: Find the vertex of the quadratic function s(x).]
Click here to see answer by stanbon(75887) |
Question 87764: The quadratic function that models the fireworks’ height s(x) in feet x seconds after they are launched is given by the equation s(x) = -16x^2+200x + 4. When should the fireworks explode so that they go off at the greatest height? What is that height? [Hint: Find the vertex of the quadratic function s(x).]
Click here to see answer by rapaljer(4671)  |
Question 87735: Help! I am stumped. I'm trying to solve this quadratic equation, and I'm not sure if the answer I've come up with is correct. Any help you can give me would be greatly appreciated.
Original Equation: (x+3)^2 = 5
Answer I've come up with so far: 5+/- sqrt.3
Am I even close to the correct answer?
Thank you again for your help!!
Click here to see answer by checkley75(3666) |
Question 87895: Would someone show me step by step how to figure this problem? Thank you
The demand equation for a certain type of printer is given by D=-200p+35,000. The supply equation is predicted to be: S=-p^2+400-20,000. Find the equilibrium price.
Click here to see answer by Flake(45) |
Question 87894: Could someone help me please? The problem is:
A ball is thrown upward from the roof of a building 100m tall with an initial velocity of 20m/s. When will the ball reach a height of 80m?
Click here to see answer by Flake(45) |
Question 87906: Please help me solve this problem:
108. Racquestball. The volume of rubber(in cubic centimeters) ina hollow rubber ball used in racquetball is given by
V= 4/3 pie R^3- 4/3 pie r^3
where the inside radius is r centimeters and the outside radius is R centimeters
Thank you...
Click here to see answer by stanbon(75887) |
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