# Questions on Algebra: Quadratic Equation answered by real tutors!

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!

 Quadratics: solvers Practice! Answers archive Lessons Word Problems In Depth

 Question 214886: what relationship does the number four have to the quadratic equation? Click here to see answer by Edwin McCravy(8909)
 Question 214886: what relationship does the number four have to the quadratic equation? Click here to see answer by Earlsdon(6287)

 Question 214935: What is the hang time of a basketball player with a 35 inch reach? Click here to see answer by drj(1380)

 Question 214881: 4/w-1=7/2w+5 solve for w Click here to see answer by drj(1380)

 Question 215104: Let a and b be real numbers such as a ≠ 0. Find the solutions for ax^2 + bx = 0. Click here to see answer by jim_thompson5910(28595)
 Question 215104: Let a and b be real numbers such as a ≠ 0. Find the solutions for ax^2 + bx = 0. Click here to see answer by stanbon(57347)

 Question 215110: find the unknown in the equation x^2+45=53 Click here to see answer by jim_thompson5910(28595)
 Question 215110: find the unknown in the equation x^2+45=53 Click here to see answer by stanbon(57347)

 Question 215124: what are the exact solutions x^2+18x+81=16 Click here to see answer by jim_thompson5910(28595)

 Question 215128: give the exact and appropriate solutions to 3 decimal places (x-6)^2=81 Click here to see answer by jim_thompson5910(28595)

 Question 215290: please can you explain how to find the solution to the quadratic equation with brackets in x(2x+5)=10 Click here to see answer by jim_thompson5910(28595)

 Question 215378: What is the quadratic equation when the vertex is (0,8)/ it is the maximum/ y-intercept is (0,8)/ the axis of symmetry is 0/ and the x-intercepts are -2 and 2 Click here to see answer by ankor@dixie-net.com(15652)

 Question 215499: What is the solution set of x^3-27=0? Click here to see answer by drj(1380)

 Question 215532: Solve over the set of complex numbers. Use completing the square. 8x^2-x-1=0 (the x on first term is squared) Thank you Click here to see answer by ankor@dixie-net.com(15652)

 Question 215869: I'm very confused! Can you help me with this? Thank you! two solutions for you to create a quadratic equation: 1. x=1 x=5 2. x=5 x=0 Click here to see answer by checkley77(12569)

 Question 215872: Solve 5x^2=20 and x = -7 Click here to see answer by checkley77(12569)

 Question 215891: I need assistance in solving the problem y+7=0. I don't understand how to do it. Click here to see answer by rfer(12660)

 Question 215941: An object is thrown downward from the top of a tower. The distance in feet that it falls in t seconds is given by the following. s(t) = 16t2 + 14t (c) Find the average velocity from t = 3 seconds to t = 5 seconds. 3 ft/sec Click here to see answer by nerdybill(6958)

 Question 215973: if (x*x)+1=3x then what is the value of (x*x)+1/(x*x) Click here to see answer by checkley77(12569)

 Question 216172: I need a help please! Solution: 10x^2=10 Click here to see answer by checkley77(12569)

 Question 216110: Please help me: A rectangular garden has a perimeter of 140m and an area of 1200m^2. set up a quadratic equation and solve it agebraically to find the dimensions of the garden. Click here to see answer by checkley77(12569)

 Question 216314: 2x squared=-10x-5 Click here to see answer by checkley77(12569)

 Question 216374: A river has a current of 5 mph. It takes Al half an hour longer to paddle upstream 1.2 miles than to paddle downstream the same distance. What is Al's rate in still water? I started out with: r=rate With current=r+5 against current=r-5 but this is as far as I could get Click here to see answer by Alan3354(30993)

 Question 216328: derive the quadratic formula from y=ax^2+bx+c Click here to see answer by jim_thompson5910(28595)

 Question 216275: Molly's age is twice Anita's. If the sum of the square of their ages is 80, what are their ages? Click here to see answer by drj(1380)

 Question 216527: I need help on this problem. Complete the first 4 steps for graphing the quadratic function given. y = -x^2 - 4x - 3 Click here to see answer by stanbon(57347)

 Question 216539: Factor out completely w^2- 12w + 36 Click here to see answer by DRichardson(63)
 Question 216539: Factor out completely w^2- 12w + 36 Click here to see answer by vleith(2825)

 Question 216553: A line is described by the equation y = 3 . A parabola is given by the equation Y = x^2 –6x +c What value(s) of c would result in this system of equations having one solution? What value(s) of c would result in two solutions? Click here to see answer by Alan3354(30993)
 Question 216553: A line is described by the equation y = 3 . A parabola is given by the equation Y = x^2 –6x +c What value(s) of c would result in this system of equations having one solution? What value(s) of c would result in two solutions? Click here to see answer by Theo(3464)

 Question 216551: A helicopter drops a supply package from an altitude of 625 ft. How long is the package in the air? Click here to see answer by drj(1380)

 Question 216596: Please anyone tell me if I got this answers right? Thank you so much!!! x = -5 and 2x2 + 4x -30 = 0 1) x=5 (x-5)(x-5) x^2 -10x +25 2) 2x^2 +4x -30 = 0 -4 +/- sqrt((4)^2 - 4(2)(-30)) 2(2) -4 +/- sqrt(16 +240) 4 -4 +/- sqrt(256) 4 -4 +/- 16 4 x = 3 x= -5 Click here to see answer by DRichardson(63)

 Question 216651: Find all points on the y-axis that are 6 units from P(4,1) Enter answers as two ordered pairs. Round answers to nearest hundreth. Click here to see answer by Alan3354(30993)

 Question 216720: help write in simplest form by combining like terms 5(y+6)+4 Click here to see answer by rfer(12660)

 Question 216865: 33x^2+10x-2=0 Click here to see answer by jim_thompson5910(28595)

 Question 217107: I am having difficulty with a question. The problems is as follows: A parabola has an x-intercept at 2, its axis of symmetry is the l ine x=4, and the y-coordinate of its vertex is 6. Determone the equation of the parabola. I am setting up my equation - y = ax^2 + bx + c and plugging in the numbers as follows: y = 4a^2 + 2b + 8. Am I on the right track? Thanks, Lori Click here to see answer by RAY100(1637)
 Question 217107: I am having difficulty with a question. The problems is as follows: A parabola has an x-intercept at 2, its axis of symmetry is the l ine x=4, and the y-coordinate of its vertex is 6. Determone the equation of the parabola. I am setting up my equation - y = ax^2 + bx + c and plugging in the numbers as follows: y = 4a^2 + 2b + 8. Am I on the right track? Thanks, Lori Click here to see answer by jsmallt9(3296)
 Question 217107: I am having difficulty with a question. The problems is as follows: A parabola has an x-intercept at 2, its axis of symmetry is the l ine x=4, and the y-coordinate of its vertex is 6. Determone the equation of the parabola. I am setting up my equation - y = ax^2 + bx + c and plugging in the numbers as follows: y = 4a^2 + 2b + 8. Am I on the right track? Thanks, Lori Click here to see answer by Alan3354(30993)

 Question 217145: I’m really confused with this; please help me solve this problem. a) Solve x^2+7x-1=0 b) Find the x-intercepts of f(f) =x^2+7x-1 What are the solutions? X=? (Type exact answers, using radicals as needed. Use a comma to separate answers as needed) Click here to see answer by Alan3354(30993)

 Question 217168: I need to find the two x-intercepts of this equation 2x^2+12x+19 Click here to see answer by Alan3354(30993)

 Question 217164: How do I solve this quadratic equation? 2x^2+12x+19 I need to find the leftmost x-int and the right most x-int for the graph of this equation Click here to see answer by ankor@dixie-net.com(15652)

 Question 217185: find the slope, if it exists y=-7x+2 Click here to see answer by mathlady(1)

 Question 216956: I am having difficulty with a question. The question is as follows: A parabola has an x-intercept at 2, its axis of symmetry is the line x=4, and the y-coordinate of its vertex is 6. Determine the equation of the parabola. I am setting up my problem as y = ax^2 + bx + c and I since x = 4, y must be 0 o = 16 + 4 + c. I'm confused and I don't think I am setting up the equation correctly. Thanks - Lori Click here to see answer by ankor@dixie-net.com(15652)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250