Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 758729: Find the Vertex of the Parabola:
x=1/3y^3y+19
I have used the -b/2a to get y which gives me -9/2 but when I plug in the -9/2 into the y values into the equation I'm not getting the same answer as they are instead I get -11/8 as the x but it keeps saying that is not the answer.

Click here to see answer by John10(297)

Question 758770: 2x^2+6x-10=x^2+6
Click here to see answer by MathLover1(20849)

Question 758808: In which quadrant would these coordinates be located ?
(4,7)
Click here to see answer by AmazinglyScherzo(2)

Question 758870: Factor:
Click here to see answer by lenny460(1073)

Question 755455:
s.s {-3,-1}

Click here to see answer by GETASEW(1)

Question 759076: Find a quadratic equation having 3+sqrt3 and 3-sqrt3 as roots.
Click here to see answer by solver91311(24713)

Question 759076: Find a quadratic equation having 3+sqrt3 and 3-sqrt3 as roots.
Click here to see answer by Alan3354(69443)

Question 759075: Hello all.I have good questions,it would be great if someone could answer me.
''The two solutions of the quadratic equation 3x^2 - x + k = 0 are p:4 and p+1.Determine the values of k and p.''
Someone can help me with this.??
Click here to see answer by solver91311(24713)

Question 759116: 5x to the second power-5x=0
Click here to see answer by MathLover1(20849)

Question 759136: "When might someone want to figure out the greatest possible area that has a given perimeter?"

What does it mean?
P.S it's a grade five question and email me as fast as you can please and thank you! Explain with full details!
Click here to see answer by Alan3354(69443)

Question 759141: "When might someone want to figure out the greatest possible area that has a given perimeter?"
What does it mean?
Could you please put it in full sentences and explain it so a me myself a great fiver would understand.
Thank you very much for your time!
Click here to see answer by jim_thompson5910(35256)

Question 759370: how do I using the quadratic formula to solve x^2-28=0
Click here to see answer by Alan3354(69443)

Question 759367: 1) Use a variety of ways to show that x^2-2x-15=0 has two solutions.
2) Explain how changing one number in the equation x^2-2x-15=0 can result in no solution.
Justify your answer.
Click here to see answer by josgarithmetic(39613)

Question 759364: So,I got an incoming photo in my inbox,and I have to give answer.I don't know the answe,rwho can help me??
Photo: http://i.picresize.com/images/2013/06/16/8renc.png
Who can give me the values of k and p,please?
Click here to see answer by josgarithmetic(39613)

Question 759427: Write a quadratic equation in standard form with the given solution set.
{-sqrt 22, sqrt 22}
Click here to see answer by Alan3354(69443)

Question 759480: Solve the equation 2x3 -9x2+12x-4 =0 given that two of its roots are equal
Click here to see answer by lwsshak3(11628)

Question 759596: what does -b/2a represent when x is minimized at a certain value.

Click here to see answer by stanbon(75887)

Question 759579: Help me to find the root of (x-2)(x-3) = 155*78/77^2
Click here to see answer by josgarithmetic(39613)

Question 759576: Help me to find the root of equation (x-2)(x-3) = 155*78/(77)^2
Click here to see answer by josgarithmetic(39613)

Question 759763: I have the equation and the answers , -3,3, and . My question is how did it simplified all the way down from to x=-(-134)�sqrt((-134)^2-4(1)(1125))�2(1) to x=134�sqrt(13456))�2 to , -3,3, and ??
Click here to see answer by sachi(548)

Question 759771: If the equations x^2+2x-3=0 & x^2+3x-k=0 have a comman root then the non-zero value of k is:
Click here to see answer by sachi(548)

Question 760085: How do I find the missing A value in a quadratic equation?
Click here to see answer by KMST(5328)

Question 760230: A right triangle's hypotenuse is 1 cm longer than twice the length of the shortest side. The third side is 1 cm less than twice the shortest side.
Find the length (in cm) of the hypotenuse?
Click here to see answer by ramkikk66(644)

Question 760321: Use the graph of y = x2 + 4x - 5 to answer the following:
a) Without solving the equation or factoring, determine the solution(s) to the
equation, 4 5 0 2 x x , using only the graph.
Answer:
Explain how you obtained your answer(s) by looking at the graph in a brief sentence:
b) Does this function have a maximum or a minimum?
Answer:
Explain how you obtained your answer by looking at the graph in a brief sentence::
c) What are the coordinates of the vertex in (x, y) form?
Answer:
d) What is the equation of the line of symmetry for this parabola?
Answer:

Click here to see answer by stanbon(75887)

Question 760541: A bag contains 42 coins, with a total weight of 246 grams. If the bag contains only gold coins that weigh 8 grams each and silver coins that weigh 5 grams each, how many gold and how many silver coins are in the bag?
Click here to see answer by Stitch(470)

Question 760563: factor t^2 + 1/2t + 1/16
Click here to see answer by ramkikk66(644)

Question 760593: Use the foil method to find the product
(1+5x)(3-4x)=

Can some one break this down for me. Thanks
Click here to see answer by josgarithmetic(39613)

Question 760715: use a quadratic equation to find two real numbers that satisfy each equation for their sum is 7, and their product is 15
Click here to see answer by josgarithmetic(39613)

Question 760784: Find the amount in an account where $100 is invested at 4% compounded quarterly for a period of two years.
Click here to see answer by rfer(16322)

Question 760887: f(x)=x^2-4x-5 i need help finding y intercept, x intercept, vertex, and axis of symmetry i am not grasping how to get the answer even after looking over other examples..
Click here to see answer by Cromlix(4381)

Question 761197: I am taking college algebra so I am not sure if this site is available for college students or not...
The directions are. (Solve each equation).
(x-3)^2/5=4
the 2 indicates the index and the 5 means it is raised to the 5th power.
Click here to see answer by josgarithmetic(39613)

Question 761251: How would you firgure out a quadratic eqaution when given table that is
x - 10 , 20 , 30 , 40 , 50 , 60 , 70 , 80
Y - 1 , 4, 9 , 16 , 25 , 36 , 49 , 64
I tried doing 1= a(10)^2 +b(10)+c
4 = a(20)^2 + b(20) + c
9 = a(30)^2+ b(30) + c
then solving. but i.cant seem to get the right answer
Click here to see answer by solver91311(24713)

Question 761233: 2x2+0x+3 = 0
Click here to see answer by unlockmath(1688)

Question 761289: I am stuck with where to begin... I think I need the perimeter of rectangle, area of rectangle and half circumference of circle...
A norman window is a rectangle with a semicircle on top. Design a window requiring 24 ft of trim on outer edges. What dimensions will allow the maximum amount of light to enter a house?

Click here to see answer by solver91311(24713)

Question 761542: help ): can you explain this step by step?
A 50 ft ladder is leaning against the side of a building. The top of the ladder reaches 34 ft higher than the distance the base of the ladder is from the wall. Find the distance from the wall to the base of the ladder.
Click here to see answer by josgarithmetic(39613)

Question 761426: 6xsquared+9x=2
Click here to see answer by ramkikk66(644)

Question 761567: help ): can you explain this step by step? thank you.
A rectangular piece of cardboard has a length that is 16 inches more than the width. The area of the cardboard is 297 sq.in. Find the measures of its width and length.
Click here to see answer by josgarithmetic(39613)

Question 761644: a rectangular pen has a length that is 4ft more than twice the width. The area of the pen is 198sq.ft. Find the measure of the pen's length and width
Click here to see answer by josgarithmetic(39613)

Question 761923: find the maximum and minimum values of a function 2x^3-3x^2-12x+8
Click here to see answer by Alan3354(69443)

Question 761944: Please help me answer these following questions. These are part of the quadratic inequalities and i hope you can provide me with solutions along with the answers please so i may know how to deal with it on my own afterwards... So here they are:
1) For what values of x is the graph of y=4x - x^2 below the x-axis?
2) For what values of x is y negative if y=x^2 - 7x?
3) If 2x^2 +7x -30=0, find the value of 2x^2 +7x?
4) What is the smallest value of y= 2x^2 - 9x?
Please reply as soon as possible, thank you so much in advance!!

Click here to see answer by nerdybill(7384)

Question 761960: a lot is in the shape of a right triangle. the hypotenuse is 3m longer than the longer leg. the longer leg is 6m longer than twice the length of the shorter leg. find the lengths of the sides of the lot.
Click here to see answer by Cromlix(4381)

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