Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 208257: Hi, I am wondering if I could get some help with this question??
Solve for r
r^2 + 3r=3
Thank you very much!!
Click here to see answer by solver91311(16868)

Question 208266: Please help me solve this equation, -4(-5w-x)-6(3x+5w)
Click here to see answer by stanbon(57203)

Question 208266: Please help me solve this equation, -4(-5w-x)-6(3x+5w)
Click here to see answer by solver91311(16868)

Question 208287: Please help me solve this equation..solve where u is the real number(u-9)^2-27=0
Click here to see answer by stanbon(57203)

Question 208289: Please help me solve this equation..please write without exponents 16^3/4
Click here to see answer by stanbon(57203)

Question 208288: Please help me solve this equation..4x^2+9x-1=0
Click here to see answer by stanbon(57203)

Question 208286: Please help me solve this equation...(x+6)^2=2x^2+21x+50
Click here to see answer by jsmallt9(3296)

Question 208280: Please help me solve this equation..-9=6/t
Click here to see answer by rfer(12644)

Question 208280: Please help me solve this equation..-9=6/t
Click here to see answer by MathTherapy(1419)

Question 208285: Please help me solve this equation.. Find the roots of quadratic equation..t^2+9t+14=0
Click here to see answer by ankor@dixie-net.com(15622)

Question 208317: How do you find x if 4x+10=13x-8
Click here to see answer by rfer(12644)

Question 208273: Please help me solve this equation 2x^2-11xy+15y^2
Click here to see answer by checkley77(12569)

Question 208402: Find an equation for the points (1,1) (2,3) (3,6) and (4, 10).
Click here to see answer by stanbon(57203)

Question 208402: Find an equation for the points (1,1) (2,3) (3,6) and (4, 10).
Click here to see answer by Edwin McCravy(8879)

Question 208402: Find an equation for the points (1,1) (2,3) (3,6) and (4, 10).
Click here to see answer by jsmallt9(3296)

Question 208450: I would just like to ask why do we need to extract square root in solving for the value of the variable?
Click here to see answer by stanbon(57203)

Question 208509: 3. Solve for y: 3(5y-2)-(y+4) = 24
Click here to see answer by checkley77(12569)

Question 208464: -2/3(6/5-7/10)=17/20
Click here to see answer by checkley77(12569)

Question 208463: 1/2x-5/3=-1/2x+19/4
Click here to see answer by checkley77(12569)

Question 208565: Please help me solve
The hint tells me to type a simplified fraction. Type exact answers, using radicals as needed. Rationalize all denominators. Express complex numbers in terms of i. Use commas to separate as needed.
Then I need to find the x-intercepts of
Thank you so much
Missy
Click here to see answer by stanbon(57203)

Question 208682:
Could you please help me with this problem?
Solve using the quadratic Formaula. Give exact solutions
4x^2= -20x-12
Thanks you!!!!!!!!
Click here to see answer by algebrapro18(206)

Question 208967: Hi all, I was hoping someone could show me how to solve the following quadratic equation:
I need to solve for t
0 = 3t^2 + 4t - 24
Help with full working and steps with notes would be most appreciated.
-nick.
Click here to see answer by Edwin McCravy(8879)

Question 209090: 11. At t=0 seconds, Vikki stood on the roof of a building and threw a penny in the air. The height in feet h(t) of the ball at t seconds is given by the formula
H(t) = -16t2 + 96t +56
a) How tall is the building (hint: t=0)
b) When is the ball at its highest point?
c) To what height does the ball travel?
d) When does the ball strike the ground?

Click here to see answer by Alan3354(30924)

Question 209093: m4-13m2+36=0
hint x=m2
Im confused and need help
Click here to see answer by RAY100(1637)

Question 209162: I need help please, solving this equation 11x^2+20x-39
Click here to see answer by Alan3354(30924)

Question 209162: I need help please, solving this equation 11x^2+20x-39
Click here to see answer by stanbon(57203)

Question 209135: Solve 9x^4-21x^2+10 = 0
Give an exact answer, using radicals as needed.
I think to start this problem off I need to factor but I'm not sure how to do that on this equation. Please help.
Click here to see answer by scott8148(6628)

Question 209264: Hi I need help solving this problem in College Algebra B. I have this on my test and need to know how to work it out. So Please show me the steps as wll as the snswers. I am so lost on this I don't know were to being.
Simplify; express answer with only positive exponents.
(x-^3y^3)/(3y^-3)^2

Click here to see answer by Alan3354(30924)

Question 209364: How do you solve x^2-8x+17=0
Click here to see answer by Alan3354(30924)

Question 209416: solve by completing square 4 x^2 - 8x - 2 = 0
Click here to see answer by Earlsdon(6287)

Question 209416: solve by completing square 4 x^2 - 8x - 2 = 0
Click here to see answer by RAY100(1637)

Question 209449: If a penny is thrown downward at 30 ft/sec
from the bridge at Royal Gorge, Colorado, how long does it
take to reach the Arkansas River 1000 ft below?
It says to use the quadratic equation.

x^2-〖30〗^2=〖1000〗^2
I have work started but it's not pasting into here.
It's from my online textbook, I cannot find the ISBN.

Click here to see answer by Alan3354(30924)

Question 209451: Harry and Gary are traveling to Nashville
to make their fortunes. Harry leaves on the train at 8:00 A.M.
and Gary travels by car, starting at 9:00 A.M. To complete
the 300-mile trip and arrive at the same time as Harry, Gary
travels 10 miles per hour (mph) faster than the train. At
what time will they both arrive in Nashville?

I am supposed to use the quadratic equation, but this is all I have come up with.
300/8x=300/(9x+10)
Click here to see answer by stanbon(57203)

Question 209463: I need help sovling this problem. I need steps in words as well as the math. Please help I nee to know how to do this.
(81a^12 b^16)^-1/2
Click here to see answer by stanbon(57203)

Question 209498: write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2+bx+c=0.
Solution:9, only solution
Click here to see answer by stanbon(57203)

Question 208985: Can you solve this (c-4)^2 = 5
Click here to see answer by RAY100(1637)

Question 208462: 7/2x-1=2x+5
Click here to see answer by checkley77(12569)

Question 209591: 16x+12x=7 quadratic formula
Click here to see answer by Earlsdon(6287)

Question 209629: can some one help me solve this and tell me how you got the answer.Please need this right away! THANK YOU
(-x)^3/5
Click here to see answer by stanbon(57203)

Question 209617: i have no idea how to even begin this problem. Any help is appreciated!
Use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to graph the function.

f(x) = -2x2 + 2x - 9

Click here to see answer by Alan3354(30924)

Question 209622: Solve the following systems of equations:

x + 2y = 6 (1)
x = 8-2 y (2)

Click here to see answer by Alan3354(30924)

Question 208418: 1/2 x + 5/6 = 1- 2/3 x get the x value that is equal to
Click here to see answer by ankor@dixie-net.com(15622)

Question 209651: I have no idea how to solve this. I am probably making it harder then it is. Can someone please help me?
Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 100 miles per hour and train B is traveling at 125 miles per hour. Train A passes a station at 12.25 P.M. If train B passes the same station at 12:37, at what time will train B catch up to train A? ______?

Click here to see answer by checkley77(12569)

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