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Tutors Answer Your Questions about Rational-functions (FREE)
Question 28283: I'm really lost at math. It's been about 19 years and I'm back in college. College algebra has been given to me without taking a refresher course. I am ohhh so lost. I have a 2-part question and would appreciate if someone would show me step by step how to do these.
1)For the equation x-2 sqrt of x = 0, solve for all values of x that satisfies the question.
2)Graph the functions y=x and y=2 sqrt of x on the same graph (by plotting points if necessary). Show the points of intersection of these two graphs.
Thank you so much.
Click here to see answer by Earlsdon(4900)   |
Question 28424: 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 line of symmetry?
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 the graph of y = x2?
Answer:
Click here to see answer by longjonsilver(2297)  |
Question 28570: This word problem has got me stumped. Any help you can provide would be appreciated.
The percent of deaths caused by smoking is modeled by the rational funtion defined by: P(X)=X-1/X
where x is the number of times a smoker is more likely to die of lung cancer than a nonsmoker. x is equal to 10.
Please help me find:
a. p(x) if x is 10
b. For what values of x is p(x) = 80%
c. Can the incidence rate equal zero, explain.
I know this is asking alot, but I have been over this several times, and can't even figure out where to begin.
Thanks!
Lisa
Click here to see answer by venugopalramana(3286)  |
Question 29099: Please help me solve the equation (x^2-3x)/(4x^2-3x)*(4x^2-16)
I have tried to follow the instructions in my book by factoring it to:
x(x-3)/4x(x-2)*(2x+4)(2x-4)
can you please show the problem step by step since i have others like it that i would like to know how to solve
Thank You,
Alyssa
Click here to see answer by sdmmadam@yahoo.com(530) |
Question 29099: Please help me solve the equation (x^2-3x)/(4x^2-3x)*(4x^2-16)
I have tried to follow the instructions in my book by factoring it to:
x(x-3)/4x(x-2)*(2x+4)(2x-4)
can you please show the problem step by step since i have others like it that i would like to know how to solve
Thank You,
Alyssa
Click here to see answer by ms.jennifer(4) |
Question 29340: The question is: Show that the nth-order finite differences for the function f(x)= x^2 - 4x + 4 of degree n are nonzero and constant. I don't know what procedures to use that's why I couldn't try solving it. I hope that you can reply me back a.s.a.p.. I really appreciate it.. Thank You!!!
Click here to see answer by venugopalramana(3286) |
Question 29436: Problem states: "Let P=(x,y) be a point on the graph of y= square root of x. Express the distance "d" from point P to the point (1,0) as a function of x."
I get to "square root of (x-1)^ + y^", then I'm confused. Please help
Click here to see answer by longjonsilver(2297) |
Question 29724: Would someone please explain factoring to me? For example, the difference of two cubes 8x^3-1, I know that 2x three times makes the first term and the cube of 1 is one-ok now I'm lost. How does this factor? Thank you in advance
Click here to see answer by stanbon(26283) |
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