Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 887618: x^2+3x+1=0

Click here to see answer by Fombitz(32388)

Question 887630: Find the value of k that makes the sum of the roots of 3x^2+18=(3k+2)x equal to 6.
Click here to see answer by Theo(13342)

Question 887717: please factor it!!!?
8x square + 5x - 200=0

Click here to see answer by jim_thompson5910(35256)

Question 887717: please factor it!!!?
8x square + 5x - 200=0

Click here to see answer by Alan3354(69443)

Question 887718: a quadrilateral has vertices A(2,6), B(5,3), C(4,-1) and D(-2,2). Find the perimeter of the quadrilateral, to the nearest tenth.
Click here to see answer by richwmiller(17219)

Question 887707: Madisson drove to Nashville and back and spent a total of 8 hours of driving. She drove at a
certain speed on the trip down, but she averaged 40km/h faster on her return trip. If the total trip
was 600km, how fast did she drive back from Nashville?

Click here to see answer by josgarithmetic(39614)

Question 887858: Trying to solve these quadratic equations
1/a + 1/b = 8 for b.
M={sqrt}4st for t.
Click here to see answer by DrBeeee(684)

Question 887872: the sum of two numbers is 210. if one number is the square of the other, find the set of numbers

Click here to see answer by DrBeeee(684)

Question 887872: the sum of two numbers is 210. if one number is the square of the other, find the set of numbers

Click here to see answer by rothauserc(4718)

Question 887856: Stuck on these quadratic equations....
Trying to find exact solutions.
X-5{sqrt}x-24=0
{sqrt}(6+2n)-2=2
Click here to see answer by josgarithmetic(39614)

Question 887885: Solve the equation. (Enter your answers as a comma-separated list. If there is no real solution, enter NO REAL SOLUTION.)
x^2 - 14x + 42 = 0

Click here to see answer by rothauserc(4718)

Question 887857: Stuck on these quadratic equations!
Trying to find exact solutions.
X- 5{sqrt}x -24=0
{sqrt}(6+2n)-2=2
Click here to see answer by ankor@dixie-net.com(22740)

Question 887943: x^2+(x-7)^2=(x+1)^2
Click here to see answer by stanbon(75887)

Question 887945: A parabola has intercepts of x = -2, x = 3, and y = -4.
a. Write the intercept form of the parabola.
b. State the direction of the parabola. Explain.
c. Write in ax2 + bx + c form.
d. What is the axis of symmetry?
e. What is the vertex?
f. Graph the parabola. Label axis, vertex, and intercepts.

Someone please help this is soooooo confusing.
Click here to see answer by josgarithmetic(39614)

Question 887978: a can do a piece of work in x days and b can do the same work in (x+16) days.if both working together can do it in 15 days .find x
Click here to see answer by josgarithmetic(39614)

Question 888045: 1. Solve the quadratic inequality. 2x^2+x-3>0

2. Graph the quadratic inequality. Label vertex, axis, and intercepts.
y>4x^2-8x+3

Do you plug it in just as a normal quadratic problem/formula, or I dont helP

Click here to see answer by Fombitz(32388)

Question 888126: Please help me solve this! :)
a car travelling at a uniform speed reached its distination which is 400 km away from the city. On the return trip, because of motor trouble, the speed is reduced to 10 miles per hour. This caused the car to stay on the road 2 hours longer. Find the speed of the car
please.
Click here to see answer by dkppathak(439)

Question 888220: Please help me with my assignment! Thank You very much :)
Mike and Gerry can finish building a doghouse in 4 hours. It would take mike 6 more hours than Gerry to finish the job alone. How long would it take each boy to finish the job if each works alone?
Click here to see answer by jim_thompson5910(35256)

Question 888278: 7>4x-1>15, find the range value.
Click here to see answer by josgarithmetic(39614)

Question 888289: how can i determine the measurements of each dimensions using quadratic equation?

Click here to see answer by Alan3354(69443)

Question 888276: If f(x) = √x^2-1 and g(x) = √x-1 which expression represents f(x)/g(x) for x>1?
Click here to see answer by Theo(13342)

Question 888333: To obtain maximum strength engineers often design tunnels as parabolic arches. In such a design if the highest point of the arch is 19 m above the road and the road is 20 m wide , determine the equation of the parabolic arch. You may find the equation using any method (vertex form, factored form etc) but you must,
a) set the bottom left corner of the tunnel as the origin
b) put your final answer into standard form
Click here to see answer by stanbon(75887)

Question 888472: x^2-2=7x-x^2
Click here to see answer by Fombitz(32388)

Question 888474:
Click here to see answer by Fombitz(32388)

Question 888583: I am looking at the equations f(x)=-6x-1 and g(x)=4x^2... What is the solution to (f+g)(x)?
Click here to see answer by jim_thompson5910(35256)

Question 888584: What is the x-coordinate of the vertex of a parabola defined by the function f(x) = -7x2 + 9x + 8.
Click here to see answer by jim_thompson5910(35256)

Question 888571: A ball is thrown from 4 feet off the ground with a vertical velocity of 30 feet per second, Knowing this, Could you provide an equation to show this? Thanks.
Click here to see answer by josmiceli(19441)

Question 888669: can you please solve it?
(x+2)^2/5 + (x-2)^2/3 =16/3
and then if you got the quadratic equation get the factor and its roots.... Thank You!!!!
Click here to see answer by Fombitz(32388)

Question 888806: question 1. a^2-18a-88=0
question 2. u^2+7u+12=0
Click here to see answer by richwmiller(17219)

Question 888877: Hi! We are asked to determine the nature of the roots of this problem:
x^2+5x=4

please indicate whether it is;
*Rational/Irrational
*Real/Non-Real
*Equal/Unequal
And kindly explain why you say so. Thanks!

Click here to see answer by Theo(13342)

Question 888853: Simplify 3^x - 3^(x-1) - 3^(x-2)
Click here to see answer by Fombitz(32388)

Question 889047: Help please.If k is a negative number, then which of the following equations will have two imaginary solution? (a) (x+1)^2=-k (b)2x^2+5k=0 (c)(x-5)^2=k=0 (d) k-3x^2=0
Click here to see answer by jim_thompson5910(35256)

Question 889052: Dear Tutor,
I am having difficulty solving this quadratic word equation. The word problem is as follows : The amount of material required to cover a ball is directly proportional to the square of its diameter. A ball with a diameter of 4 cm needs 256 cm^2 of material to cover it. How much material is need to cover a ball with a diameter of 12 cm. If you can answer me ASAP, that would me perfect. I appreciate your help.
, Anthony Aguirre
Click here to see answer by richwmiller(17219)

Question 889111: The number of roots of the equation
8 sec^(theta) - 6 sec(theta) +1 =0 ?
Click here to see answer by Alan3354(69443)

Question 889080: If y=X^2 +X - 12, what is the range of values for which Y > or = 0
Click here to see answer by Fombitz(32388)

Question 889129: Determine the axis of symmetry,the vertex and two other points for showing all work. Then, graph this function. Be sure to label the axis of symmetry, the vertex
I need full solution for how you get the answer tnc
Click here to see answer by Fombitz(32388)

Question 889168: Please solve :
1/2x+3 - 3/x-3 = 3/2x^2-3x-9
Thanks :)
Click here to see answer by Fombitz(32388)

Question 889208: A) Solve (1/a)+(1/b)=8 for b

B) Solve M=({sqrt}4st) for t
Click here to see answer by Fombitz(32388)

Question 889340: The lowest temperature ever recorded I a certain town was -28f the highest temperature ever recorded there was 136f more than the lowest what was the highest temperature?
Click here to see answer by Fombitz(32388)

Question 889499: Find the solution
4x^2 + 8 = 0
Click here to see answer by Alan3354(69443)

Question 889534: A bridge is to be built across a waterway which is
50 feet wide and is frequented by ships. The bridge design team determines that a parabolic
opening underneath the bridge is the best possible option for both structure and functionality
(keeping the waterway passable by ships while still being safe for vehicles to travel across).
If parabolic opening touches the ground right at the edges of the waterway and the maximum
height of the opening is 60ft, what is the maximum height that a 20-foot wide boat could be
and still pass through the opening?
Click here to see answer by ankor@dixie-net.com(22740)

Question 889699: The difference between 2 natural number is 10 and their product is 119. What are the two numbers ?
Click here to see answer by JulietG(1812)

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, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240