Algebra ->  Algebra  -> Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> Questions on Algebra: Quadratic Equation answered by real tutors!      Log On

 Ad: You enter your algebra equation or inequality - Algebrator solves it step-by-step while providing clear explanations. Free on-line demo . Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Question 556842: Find the x- and y-intercepts. F(x)25x+10x+1 I got.. y-intercept is (0,1) x-intercept is ((-1/5,0) Am I correct? Click here to see answer by stanbon(57347)

 Question 556841: #20 Solve the formula for the given variables. Assume all variable represent non negative numbers. A=2s^2, for s I got s= √A/2 Am I right? Click here to see answer by stanbon(57347)

 Question 557052: Please, I need help with the following, ASAP :/ *Solve by the quadratic formula. Simplify answers. 1. x^2-3X-1=0 2. 4X^2+x-1=0 3. 6x^2 -2X-1 =0 Thanks!! Click here to see answer by richard1234(5390)

 Question 557167: Determine the abscissae of the maxima, minima and inflection points. y = x^4 + 6x^3 - 5 The answer is supposed to be: Minimum at x point = -9/2, inflection points at x=0 and x=-3 Help me please. Click here to see answer by Alan3354(30993)

 Question 557164: Determine the coordinates of a relative maximum of this function if any. f(x) = x^3 - 3x^2 - 9x - 7 Help me please. Click here to see answer by Alan3354(30993)

 Question 557214: Find two numbers whose sum is 36 and whose product is a maximum Click here to see answer by josmiceli(9680)

 Question 557458: Mathematicians have been searching for a formula that yields prime numbers. One such formula was x^2-x+41. Select some numbers for x, substitute them in the formula, and see if prime numbers occur. Try to find a number for x that when substituted in the formula yields a composite number. I'm not sure of the steps to complete this problem...Please explain. Click here to see answer by KMST(1868)

 Question 557658: For the function y = f (x) Next 3x^4 - 6x^2, determine if the graph has minima or maxima and, where appropriate, specify the coordinates of these points. Use the first derivative test and the second derivative test. Click here to see answer by solver91311(16885)

 Question 557914: What is the the discriminant of 12x^2-x-6=0? I tried working it out and got an a long decimal which rounded to 2, found the square root, i then added (1/6),and divided it by 2, however when i stored x in my calc to check it it didnt = 0, so i know i did something wrong. I think i went wrong with the discriminant but i could have messed up somewhere else. if there is anyway you could show mw how to work it i would be very appreciative!!! Click here to see answer by scott8148(6628)

 Question 557924: Where does the -16 come from in the vertical motion equation? Click here to see answer by Alan3354(30993)

 Question 557922: Where does the -16 come from in the vertical motion formula? Click here to see answer by richard1234(5390)

 Question 557998: How can i find all the positive integers "n" so that 2^17 + 17 * 2^12 + 2^n is a perfect square? Click here to see answer by richard1234(5390)

 Question 558158: susan drops her camera in the river from a bridge that is 400 feet high. How long is it before she hears the splash? Click here to see answer by Earlsdon(6287)

 Question 558424: I am reviewing for a test and I think I got the first 3 right. Can anybody check my answers? Also, I am having trouble on number 4. Thanks!!! 1. Solve. (x+18)(x-13)(x+16)>0 I got …-18 < x < -16 or x>13 Am I right? 2.Multiply. (2√3-6√6)(5√3+15√6) I got -510 Am I correct? 3. use the quadratic formula to solve the equation.x^2-x=-5 I got: x=1+i√19/2, 1-i√19/2 Am I correct? 4. find all the numbers for which the rational expression is undefined. (s^3-6s)/(s^2-81) Click here to see answer by Alan3354(30993)

 Question 558372: Help!! Solve. (x+18)(x-13)(x+16)>0 I got -1813 Am I right? Click here to see answer by KMST(1868)

 Question 558703: Solve the equation by completing the square x^2 + 6x − 12 = 0 Click here to see answer by richard1234(5390)

 Question 558701: Solve the equation by factoring 6x(x − 1) = 7 − 25x Click here to see answer by mananth(12270)

 Question 558829: a garden measuring 12 meters by 16 meters is to have a pedestrian pathway installed all around it, increasing the total area to square meters.what will be the width of the pathway. Click here to see answer by rapaljer(4667)

 Question 558865: A rectangular pool has dimensions of 40 ft. and 60 ft. If the pool has a patio around it that equals the area, how wide is the distance from the pool edge to the patio edge? I got the answer x=10, however the question ask the distance from the pool edge to the patio edge? What is the answer? 80? Click here to see answer by mananth(12270)

 Question 558969: Y=x^2 + 6x + 9 Identify the minimum value Click here to see answer by josmiceli(9680)

 Question 559179: a vollyball player hits a ball and it goes straight up into the air with an initial velocity of 16 feet per second from an initial height of 4 feet. find the function that describes the height of the ball in terms of the t and determine the time at which the ball reaches its maximum height. Click here to see answer by stanbon(57347)

 Question 559340: how do you find the vertex of a quadratic equation using the intercept form? Click here to see answer by stanbon(57347)

 Question 559483: I have the answer to this problem but I am not sure how they got it... g(x)= 4x^2 - 3x + 1 answer; 3/8 +- square root (7)/8i Can someone explain how they did this? Thank you Click here to see answer by Alan3354(30993)

 Question 559574: Is this even considered to be a quadratic equation?? I do not understand by what they mean to solve this.. Do they mean distribute and then solve? But how? Please help! I am very frustrated! Thanks! (x-3)(5x+2)= -13(x-3) Click here to see answer by ankor@dixie-net.com(15652)
 Question 559574: Is this even considered to be a quadratic equation?? I do not understand by what they mean to solve this.. Do they mean distribute and then solve? But how? Please help! I am very frustrated! Thanks! (x-3)(5x+2)= -13(x-3) Click here to see answer by richard1234(5390)

 Question 559961: A ball is thrown upward from ground level. Its height, h, in feet above the ground after t seconds os h=48t-16t^2. Find the maximum height of the ball. Find the time it takes for the ball to fall back to the ground. Click here to see answer by nerdybill(6959)

 Question 560000: what is the table of values for the following equation 12x + -2y = -34 Click here to see answer by kkasko(46)

 Question 560125: During the first part of a trip, a canoeist travels 34 miles at a certain speed. The canoeist travels 9 miles on the second part of the trip at a speed 5mph slower. The total time for the trip is 5hrs. What was the speed on each part of the trip? Type an integer or decimal and round to the nearest hundredth. Click here to see answer by ankor@dixie-net.com(15652)

 Question 560202: find the x and y intercepts for: x2+9x-10=0 Click here to see answer by rfer(12660)

 Question 560238: find the number a for which x=2 is a solution of the given equation. x+8a=46+ax-5a Click here to see answer by mananth(12270)