Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 57012: Can you please help me on the following problem: "A rectangle whose perimeter is 200 is 4 times as long as it is wide. Find the dimensions and area." CAn you please help me.
Click here to see answer by rcmcc(152)

Question 56993: this is a story problem. "A rectangle whose perimeter is 192 is 3 times as long as it is wide. Find the dimensions and area." Can you please help me.

Click here to see answer by rcmcc(152)

Question 57152: Is there a quadratic functions with zeros x = 1, x = 2, and x = 3?

Click here to see answer by Scriptor(36)

Question 57203: Can you please help me with this problem? Using the function y=1/x-2
Give the y values for x= -2,-1,0,1,2,3.
Can you break it down and show me step by step?
Using these points, draw a curve and show it on a graph.
Click here to see answer by stanbon(75887)

Question 57322: Please help again. Much appreciated.
The demand equation for a certain type of printer is given by
D=200p+35,000
The supply is predicted to be:
S=p^2+400p-20,000
Find the equilibrium price. Here is what I did. I dont know how to find the price.
p^2+400p-20,000=-200p+3500
O=p^2-600p+23,500
p=600psqrt(-600)^2-4(23,500)/2
p=600+/-sqrt266,000/2
Is the price 42.12????
Hellllpppp!
Click here to see answer by stanbon(75887)

Question 57318: please help me.
A ball is thrown upwards from the roof of a buildiung 100 m tall with an inituial velocity of 20m/s. When will the ball reach a height of 80m?
I believe the equation is h=5t^2+80t+100. How do I solve using quadratic formula?
Thanks
Click here to see answer by Nate(3500)

Question 57307: What is the domain and range for the (parabola)function:
1x^2=(-1)x+-1=0
thanks
Click here to see answer by Nate(3500)

Question 57287: Use the quadratic formula to solve the following equation 1.21z^2+5.28z+5.76=0. Convert the answer into an improper fraction.
Click here to see answer by stanbon(75887)

Question 57392: This is actually a word problem, but it needs to be graphed to find the parabola along with the solution and I don't know where to begin:
A company uses the formula C(x) = 0.02x^2 - 3.4x + 150 to model the unit cost in dollars for producing x stabilizer bars. For what number of bars is the unit cost at its minimum? What is the unit cost at that level of production?
Can someone PLEASE help?
Click here to see answer by funmath(2933)

Question 57210: Suppose that the equation p(x) = -2x^2 + 280x - 1000, where x represents the number of items sold, describes the profit function for a certain business. How many itmes should be sold to maximize the profit?
Click here to see answer by funmath(2933)

Question 57197: Can you please help me? The problem is the square root of X squared to the third power equals 9. Can you show me how to work this out step by step?
Click here to see answer by checkley71(8403)

Question 57155: 1. If x = 3 and x = -5, then form a quadratic equation.
2. What type of solution do you get for quadratic equations where D < 0? Give reasons for your answer. Also provide an example of such a quadratic equation and find the solution of the equation.
3. Create a real-life situation that fits into the equation (x + 3)(x - 4) = 0 and express the situation as the same equation.
Click here to see answer by ankor@dixie-net.com(22740)

Question 57590: 15x^2y^2-9xy^2+6x^2y
I came up with
3(5xy-3y+2x)
I am not sure this is right can you let me know if i am going in the right direction.
Click here to see answer by stanbon(75887)

Question 57591: -3 - square root of 18 / -6
sorry i do not know how to place the square root sign in so i wrote it out.
Click here to see answer by stanbon(75887)

Question 57597: 9a^2- 64b^2
I tried to work this out but i am not sure this is correct can you let me know. thank you
(3a+8b)(3a-8b)
Click here to see answer by stanbon(75887)

Question 57599: x^3y+2x^2y^2+xy^3
I came up with the answer can you let me knwo if i am correct
x(x^2y+y^3+2xy^2)
xy(x^2+y^2+2xy)
Click here to see answer by stanbon(75887)

Question 57600: i tried to work this out cna you please check
x^3+ax+3a+3x^2
i re order to get the like terms together this is what i came up with
3x^2+x^3+ax+3x^2
x(3x+x^2)(a+3a)
x(3+x)a(3)
i think i am wrong can you please show me an eash way or lend any tips you may have.
Click here to see answer by stanbon(75887)

Question 57588: Towering antenna. A guy wire if length 50 feet is attached to the ground and to the top of as antenna. The height of the antenna is 10 feet larger than the distance from the base of the antenna to the point where the guy wire is attached to the ground. What is the height of the antenna?

10feet up the left side of the triangle
x-2 across the bottom
x on the right side of the triangle
Click here to see answer by stanbon(75887)

Question 57617: I need help solving this equation:
5x^3+20x^2+15x=0
Click here to see answer by funmath(2933)

Question 57581: t^2+1=13/6t
Click here to see answer by terbear1963(43)

Question 57689: Which quadrant is quadrant I, quadrant II, quadrant III, and quadrant IV?

Click here to see answer by funmath(2933)

Question 57767: 44. m^3+2m^2-3m=0

Click here to see answer by stanbon(75887)

Question 57767: 44. m^3+2m^2-3m=0

Click here to see answer by hayek(51)

Question 57765: 18. 2h^2-h-3=0
2(h-1.5)(h+1)
Tried to work it out don't know if this is the right answer I do not get how to doe these. Can you please check thank you very much I don't know what I would do with out such good help like you guy and gals. Thanks again

Click here to see answer by stanbon(75887)

Question 57766: 32. 2w(4w+1)=1
can someone please help
Click here to see answer by hayek(51)

Question 57766: 32. 2w(4w+1)=1
can someone please help
Click here to see answer by Earlsdon(6294)

Question 57766: 32. 2w(4w+1)=1
can someone please help
Click here to see answer by funmath(2933)

Question 57766: 32. 2w(4w+1)=1
can someone please help
Click here to see answer by oberobic(2304)

Question 57764: 66. 3x^2-17x+10
(3x-1)(x^2-5)
Tried to work it out don't know if this is the right answer I do not get how to doe these. Can you please check thank you very much I don't know what I would do with out such good help like you guy and gals. Thanks again

Click here to see answer by Earlsdon(6294)

Question 57763: 14. 15t^2-17t-4
(5t-3)(t-4)
Tried to work it out don't know if this is the right answer I do not get how to doe these. Can you please check thank you very much I don't know what I would do with out such good help like you guy and gals. Thanks again

Click here to see answer by oberobic(2304)

Question 57762: 104. -4w^3-16w^2+20w
-2w(2w+2)(w-5)
Tried to work it out don't know if this is the right answer I do not get how to doe these. Can you please check thank you very much I don't know what I would do with out such good help like you guy and gals. Thanks again

Click here to see answer by funmath(2933)

Question 57854: how do you factor 10x + 35y

Click here to see answer by checkley71(8403)

Question 57950: I have to solve by using the quadratic formula.
3x^2=11x+4.
I get -1/3 and 4
Am i correct?
Thanks for helping me.
Click here to see answer by hayek(51)

Question 57950: I have to solve by using the quadratic formula.
3x^2=11x+4.
I get -1/3 and 4
Am i correct?
Thanks for helping me.
Click here to see answer by stanbon(75887)

Question 57952: How do I graph this equation and complete the table for values. I think I can graph ok. I am just not sure how to come up with the table for values.
y=x^2-5x+3
Thanks a lot
Click here to see answer by stanbon(75887)

Question 57988: How do i find the y-intercept of the graphs of the function y=3x^2-18x+15
Click here to see answer by hayek(51)

Question 57996: multiply and simplify (5+4i)(3-7i)
15-35i+12i+28
43-23i
Click here to see answer by rcmcc(152)

Question 57996: multiply and simplify (5+4i)(3-7i)
15-35i+12i+28
43-23i
Click here to see answer by jaya_rohith1@yahoo.com(33)

Question 57991: How do I find the equation of the axis of symmetry for a parabola that contains the points (-2,6), (6,6), and (0,6)
Click here to see answer by hayek(51)

Question 57991: How do I find the equation of the axis of symmetry for a parabola that contains the points (-2,6), (6,6), and (0,6)
Click here to see answer by venugopalramana(3286)

Question 58014: in which quadrant are the following points located? 3,-1
and can you explain so i can do the rest of them?
Thanks
Heather
Click here to see answer by rcmcc(152)

Question 58014: in which quadrant are the following points located? 3,-1
and can you explain so i can do the rest of them?
Thanks
Heather
Click here to see answer by checkley71(8403)

Question 57961: Table of values question. Please help me someone.
what are the table of values for
4=-x^2+6x-2? I have to come up with 5 values each acceptable for x and y.
Thanks in advance
Click here to see answer by checkley71(8403)

Question 57962: I am trying to solve
-9(x)-3)^2=-7
Thanks
Click here to see answer by tutorcecilia(2152)

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, 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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