Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE) Get help from our free tutors ===> Algebra.Com stats: 2031 tutors, 423874 problems solved View all solved problems on Quadratic_Equations -- maybe yours has been solved already! Become a registered tutor (FREE) to answer students' questions. If you need immediate math help from PAID TUTORS right now, click here. (paid link) Click here to see problems AND answers on one page Question 62534: Hi i would like some help on solving these two simultaneous equations for my homework as i am struggling to solve them please help me as it would be very appreciated the questions are 1. one side of the rectangle is 2cm longer than the other. The perimeter of the rectangle is 24 cm. How long are the sides of the rectangle? 2. A fitness fantastic swims 40 lengths of his pool per day. After 5 years, he has swum 1825 km. How long is his swimming pool in meters? (assume there are 365 days per year) I would be most gratefull if you can help me thank you Click here to see answer by uma(370)   Question 62566: When solving a quadratic equation you have 0,1,2 solutions. What does this mean "graphically? Click here to see answer by Edwin McCravy(8999)   Question 62565: Write in vertex form: x^2-1/2x+9/4 Click here to see answer by Nate(3500)   Question 62563: Y=4x²+16x+23 Click here to see answer by checkley71(8403)   Question 62607: divide x^2-13x+30/x-3 Click here to see answer by funmath(2925)   Question 62604: divide 4/x^8 by 16/x^5 Click here to see answer by Nate(3500)   Question 62604: divide 4/x^8 by 16/x^5 Click here to see answer by funmath(2925)   Question 62604: divide 4/x^8 by 16/x^5 Click here to see answer by 303795(595)   Question 62564: solve the equation by making a substituition x-(7*x^.5)+8 =0 Click here to see answer by 303795(595)   Question 62611: When it say find the x intercepts do I graph it or give the variable for the intercept y=x^2-9x+20 Click here to see answer by funmath(2925)   Question 62603: The length of a rectangle is 5cm more than 3 times the width. If the area of the rectangle is 92cm^2, find the dimensions of the rectangle to the nearest thousandth. Click here to see answer by checkley71(8403)   Question 62644: Please help to solve (4 2/3)v - (2 1/5) = (3 1/6) Click here to see answer by stanbon(57967)   Question 62562: Y=4x²+16x+23 Click here to see answer by josmiceli(9817)   Question 62561: Y=4x²+16x+23 Click here to see answer by checkley71(8403)   Question 62706: For the function y = x2 - 4x - 5, how do you write the function in the form of y = a(x - h)2 + k? Click here to see answer by stanbon(57967)   Question 62724: please help me on a sales trip gail drives 6oo miles to richmond averaging one speed. the return trip home i made at the same average speed ten mph slower. total time for the round trip is 22 hours. find gails average speed for each part of the trip. this is what i've done: s=600/(t1) and s-10=600/(t2) (600/t1)-10=600/(t2) (600/t2)-(10*t2)=(600*t1) (600/t2)-(600*t1)-(10*t2)=0 (590*t2)-(600*t1)=0 where do i go from here or am i doing this right at all thank you for your help Click here to see answer by 303795(595)   Question 62773: I need help trying to figure this one out. Please. x2 – 4x – 5 = 0 Solve by factoring? Could you please help me figure this one out? Click here to see answer by uma(370)   Question 62771: write a quadratic equation that has the solutions -10i and 10i thank you Click here to see answer by jai_kos(139)   Question 62769: can you help? find the vertex and intercepts of the quadratic function f(x)=x^2+x-6. thank you very much Click here to see answer by uma(370)   Question 62769: can you help? find the vertex and intercepts of the quadratic function f(x)=x^2+x-6. thank you very much Click here to see answer by jai_kos(139)   Question 62775: need help find all real and complex solutions: x^3+2x^2+3x=0 Click here to see answer by Cintchr(481)   Question 62776: help please solve the rational inequality (x-2)/(x+3) is less than or equal to 0 is it: (-3,2] (-oo,-3) (-oo,-3)U{2,oo) or [2,oo) i am very confused Click here to see answer by jai_kos(139)   Question 62777: Could someone please help me with this. I just don't get algebra, but i'm getting better. John has 300 feet of lumber to frame a rectangular patio (the perimeter of a rectangle is 2 times length plus 2 times width). He wants to maximize the area of his patio (area of a rectangle is length times width). What should the dimensions of the patio be, and show how the maximum area of the patio is calculated from the algebraic equation. Show clearly the algebraic steps which prove your dimensions are the maximum area which can be obtained. Use the vertex formula to find the maximum area. Click here to see answer by stanbon(57967)   Question 62777: Could someone please help me with this. I just don't get algebra, but i'm getting better. John has 300 feet of lumber to frame a rectangular patio (the perimeter of a rectangle is 2 times length plus 2 times width). He wants to maximize the area of his patio (area of a rectangle is length times width). What should the dimensions of the patio be, and show how the maximum area of the patio is calculated from the algebraic equation. Show clearly the algebraic steps which prove your dimensions are the maximum area which can be obtained. Use the vertex formula to find the maximum area. Click here to see answer by jai_kos(139)   Question 62772: this is very difficult for me, can you help? Let f(x)=5x-6 and g(x)=x^2-8x+16. find the following: 1) (f+g)(x) 2) (g-f)(2) 3) (fg)(5) 4) f/g(x) thanks so much! Click here to see answer by stanbon(57967)   Question 62787: FOR FUNMATH, please help!! I cannot get the answer that is provided. The answer is (256/16)61/4 = (256^1/4)/16^1/4 = 4/2 = 2. The problem is Solve 6/ x-3 - 7/x-5 = 1 - 11/x-1. Click here to see answer by funmath(2925)   Question 62991: Use the quadratic formula to solve each equation. x^2=-5/4x+3/2 Click here to see answer by stanbon(57967)   Question 63071: This function y = x² - 4x - 5 has been put into 'standard form' y =(x-2)² - 9. For the function, what would be the equation of the line of symmetry for the graph of this function? Click here to see answer by Edwin McCravy(8999)   Question 63073: I have a quadratic function word problem that I need help with. I need help with the questions about it. This is the word problem ------ "Suppose a baseball is shot up from the ground straight up with an initial velocity of 32 feet per second. A function can be created by expressing distance above the ground, s, as a function of time, t. This function is s = -16t2 + v0t + s0 - 16 represents 1/2g, the gravitational pull due to gravity (measured in feet per second2). - v0 is the initial velocity (how hard do you throw the object, measured in feet per second). - s0 is the initial distance above ground (in feet). If you are standing on the ground, then s0 = 0." These are the questions. What function are they using in this problem? The ball will be how high above the ground after 1 second? How long will it take to hit the ground? What is the maximum height of the ball? What time will the maximum height be attained? Thank You in advance. Click here to see answer by Edwin McCravy(8999)   Question 63115: can you help me solve by using the quadratic formula of x^2-4x-5=0? Click here to see answer by checkley71(8403)   Question 63111: can you help me solve by using the quadratic formula of x^2-4x-5=0? Click here to see answer by stanbon(57967)   Question 63174: Name the values of the characteristics of the following quadratic equations 2. f(x) = 3(x – 5)^2 + 2 3. g(x) = -4x^2 – 8x – 3 axis of symmetry, vertex Max or Min point Range x-intercepts amplitude Click here to see answer by stanbon(57967)   Question 63229: Please help me find values of c so that the equation has 2 real number solution, one-real solution, and no real solution. . Click here to see answer by stanbon(57967)   Question 63252: Please help me with these answers. Thanks 7. Listed below are the average prices of MyFavoriteStock, Inc. since 2000. Use your calculator to find (a) the Regression Formula (assume it is a linear function: LinReg) and (b) the predicted value in 2020. Years since 2000 1 2 3 4 5 6 Stock Value per share $8 $10 $13 $11 $14 $16 Regression Formula = __________________ 2020 predicted price = __________________ Click here to see answer by uma(370)   Question 63113: can you help me solve by using the quadratic formula of x^2-4x-5=0? Click here to see answer by ankor@dixie-net.com(15746)   Question 63275: Please help me with this problem, Thanks Use the Completing the square or shortcut Method to find the Standard Form of the following quadratic function. Standard form: f(x)=a(x-h)^2+k 1. f(x)=x^2-2x-5=_______ Click here to see answer by uma(370)   Question 63251: 6.f(x) = x–3/x+2 6.g(x) = 3x2/x2 + x - 6 x-intercepts y-intercepts Vertical asymptotes Horizontal asymptotes Domain of the function Click here to see answer by stanbon(57967)   Question 63379: Solve for x by completing the square: kx^2-3cx-4a=0 I have tried but I wonder if there is no solution. Thanks for your time! By the way, this question is not from any textbook. My teacher had it on the board for the class to solve. Click here to see answer by ptaylor(2052)   Question 63400: please please HELP! AFter the storm, the number of destroyed flowers was 240 percent more than before the storm. If 68,000 flowers were destroyed after the storm, how many had been destroyed before the storm? Click here to see answer by checkley71(8403)   Question 63527: I cant figure out how to solve the problem X2 + 9x + 3 = 0. I was told i need to use the quadratic formula though. Any help would be greatly appreciated. Click here to see answer by checkley71(8403)   Question 63601: This problem is not in the book nor can I find one like it to show me what to do, my instructor made i up I think. x^2 + 8x (> or = ) 0 I am not sure where to start on this thanks Click here to see answer by sarahschober(35)   Question 63743: please help! simplify -2/-2^-3 - 3/-3^-2 Click here to see answer by tanimachatterjee(60)   Question 63739: please help to simplify by adding like terms : - 4mn^2/m^-1 + 2mn^2m^-1 - 7m^3/mn^-2 Click here to see answer by tanimachatterjee(60)   Question 63911: Solve by completing the square: I attempted to do this problem, can you please analyze and inform me as to where I may have gone wrong. I think I missed something or did a step wrong. x^2+10x+13=0 x^2+10x+13-13=0-13 x^2+10x+(5)^2=-13+(5)^2 (x+5)^2=-13+25 (x+5)^2=5 x+5=±5 x+5-5=-5±5 x=-5±5 x=-5-5 x=-10 or x=-5+5 x=-0 Click here to see answer by venugopalramana(3286)   Question 63911: Solve by completing the square: I attempted to do this problem, can you please analyze and inform me as to where I may have gone wrong. I think I missed something or did a step wrong. x^2+10x+13=0 x^2+10x+13-13=0-13 x^2+10x+(5)^2=-13+(5)^2 (x+5)^2=-13+25 (x+5)^2=5 x+5=±5 x+5-5=-5±5 x=-5±5 x=-5-5 x=-10 or x=-5+5 x=-0 Click here to see answer by joyofmath(189)

---

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, 20251..20295, 20296..20340