Questions on Algebra: Rational Functions, analyzing and graphing answered by real tutors!

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 Algebra: Rational Functions, analyzing and graphing Solvers Lessons Answers archive Quiz In Depth

 Question 437944: Find the standard form of the equation of the ellipse with the given characteristics. foci: (1,1), (1,5) endpoints of the major axis: (1,-5), (1,11) I need help with this problem. Click here to see answer by ewatrrr(10682)

 Question 438169: How do you solve the problem 20y-60=5x i think you subtract five x and then get the answer and then divide by that number . I have to graph this using slope and intercept Click here to see answer by stanbon(57967)

 Question 438340: given that DE is parallel to AB, what is the measure of DE? Click here to see answer by solver91311(17077)

 Question 438535: hi im having trouble simplifying expressions x cubed over 3x squared minus 12 divided by x cubed plus 9x minus 30 Click here to see answer by solver91311(17077)

 Question 438942: find the amount of time it takes if 400=-16t^2-2t+733 Click here to see answer by nerdybill(7008)

 Question 439261: What is rational sum of 7/square root of 8? Click here to see answer by nerdybill(7008)

 Question 439741: Consider the function defined by f(x)=sqrt(x-2)-1 a. use algebra to verify that the function is one-to-one. b. sketch the graphs of f and f^-1 on the same coordinate axes. Label each graph. This area of PreCal is foreign to me and I am in need of help. I would appreciate any help I receive. Thank you. Click here to see answer by edjones(7569)

 Question 441117: Find all roots of f(x) = x^3-x^2-5x+5 EXACTLY. Sketch a complete graph of f(x) and label all roots clearly. Click here to see answer by stanbon(57967)

 Question 441657: Jeremy and Ahmed are painting a wall. Working alone, Jeremy can paint 1/4 of the wall in 1 hour. Working to gether, Jeremy and Ahmed can paint the entire wall in 35 minutes. How long would it take Ahmed to paint he entire wall by himself? Click here to see answer by robertb(4012)

 Question 442307: Hello, Can you help me simplify step by step √4:(48)* 3√4:(3) ( The 4th root of 48 Times the 3 * 4th root of 3 ) The answer comes to 6* 4th root of 9; but i dont know how my teacher got it. Click here to see answer by swincher4391(726)

 Question 442304: When solving a rational equation what is the first step we must always take? Illustrate with an example how you clear the rational equation of fractions. Click here to see answer by swincher4391(726)

 Question 442413: Please help. I do not understand 2 problems and I have been working on them for hours now?? Thanks so much! 1. Solve w^4-12w^2-2=0 2. Write the quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form ax^2+bx+c=0. -(sqrt)2, 7 (sqrt)2 Click here to see answer by ewatrrr(10682)
 Question 442413: Please help. I do not understand 2 problems and I have been working on them for hours now?? Thanks so much! 1. Solve w^4-12w^2-2=0 2. Write the quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form ax^2+bx+c=0. -(sqrt)2, 7 (sqrt)2 Click here to see answer by rwm(914)
 Question 442413: Please help. I do not understand 2 problems and I have been working on them for hours now?? Thanks so much! 1. Solve w^4-12w^2-2=0 2. Write the quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form ax^2+bx+c=0. -(sqrt)2, 7 (sqrt)2 Click here to see answer by htmentor(808)

 Question 442538: For each line,use the given conditions to write an equation in the point slope form and the slope intercept form -5,passing through(-4,-2) Click here to see answer by swincher4391(726)

 Question 442758: 3a2(a – b) – 6a(a – b) + 21(a – b)Factor out the binomial Click here to see answer by rwm(914)

 Question 443153: Digital Camera Prices the prices (in dollars) for a particular model of digital camera with 6.0 megapixels and an optical 3X zoom lens are shown below for 10 online retailers. Estimate the true mean for this particular model with 95% confidence. Click here to see answer by stanbon(57967)

 Question 443251: Find all numbers for which the rational number is undefined. p^3-9p/p^2-16 Click here to see answer by swincher4391(726)
 Question 443251: Find all numbers for which the rational number is undefined. p^3-9p/p^2-16 Click here to see answer by nerdybill(7008)

 Question 443259: let L be a line that is neither vertical nor horizontal and which does not pass through the origin. Show that L is the graph of (x/a) + (y/b) = 1, where a is the x-intercept and b is the y-intercept of L. Click here to see answer by swincher4391(726)

 Question 443315: This is a long question with multiple parts but is just one single question my professor gave me to work on but that I'm stuck on. Test: 1. y=x to the 4th minus 2x squared 2. y=x to the 3rd minus 6x 3. y=x squared + 2x + 1 for symmetry with respect to: 1. x-axis 2. y-axis 3. the origin (0,0) 4. write them in function notation and say which one is even, odd, or neither? Click here to see answer by shree840(260)

 Question 443318: Suppose f(x)=A ln(x)+B, where A and B are constants. If f(1)=10 and f(e)=1. what are A and B? What are key algebraic concepts needed to solve the problem? Click here to see answer by stanbon(57967)

 Question 443313: Find two functions, f(x) and g(x) such that (fog)(x)=h(x) or (gof)(x)=h(x) where h(x)= sq. rt. of x squared minus 2 over x squared plus 3, and verify. Click here to see answer by stanbon(57967)

 Question 443325: This is a long question with multiple parts but is just one single question my professor gave me to work on but that I'm stuck on. Test: 1. y=x to the 4th minus 2x squared 2. y=x to the 3rd minus 6x 3. y=x squared + 2x + 1 for symmetry with respect to: 1. x-axis 2. y-axis 3. the origin (0,0) 4. write them in function notation and say which one is even, odd, or neither? Click here to see answer by stanbon(57967)

 Question 443411: if you deposit 4500 in an account that earns 3.5% annual interest, whats the balance after one year if the interest is compounded annually? also monthly and quarterly? Click here to see answer by rfer(12730)

 Question 443415: how to turn an irrational number into a rational number Click here to see answer by richard1234(5390)

 Question 443633: I have been trying to solve the below problem for some time now, Determine the vertical and horizontal asymptotes of f(x) = (x)/(x+2) and graph your solution. Click here to see answer by lwsshak3(6761)

 Question 443788: You must leave for campus in half an hour, or you will be late for class. Unfortunately, you are snowed in. You can shovel the driveway in 45 minutes and your brother claims he can do it in 36 minutes. If you shovel together, how long will it take to clear the driveway? Will this give you enough time before your parents return? Click here to see answer by jorel1380(2518)

 Question 443494: find the inverse of y=6x^2-4 is the inverse a function? Click here to see answer by lwsshak3(6761)

 Question 443780: In still water, a boat averages 8 miles per hour. It takes the same amount of time to travel 30 miles downstream, with the current, as 18 miles upstream, against the current. What is the rate of the water's current? Click here to see answer by lwsshak3(6761)

 Question 441009: describe the graph of each function y=3/x+2 and y=3x^2 Click here to see answer by lwsshak3(6761)

 Question 444140: My question is: 1/x over 2/y. i got y/2x and x cannot equal zero. is this correct? Click here to see answer by edjones(7569)