Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 256251: solutions for x2 + 10x + 1 = -12 + 2x
Click here to see answer by Greenfinch(383)

Question 256251: solutions for x2 + 10x + 1 = -12 + 2x
Click here to see answer by richwmiller(17219)

Question 256294: The product of two consecutive numbers is 72. Find the two integers. Can someone show me the steps to reach to the answer? Thank you.
Click here to see answer by scott8148(6628)

Question 256296: I am thinking of three consecutive numbers. If I multiply the first with the second and then subtract three times the third, the result is 57. What are the numbers? Can someone please show me the steps to get to the answer? Thank you.
Click here to see answer by edjones(8007)

Question 256306: The perimeter of a rectangle is 14 feet, and the area is 12 square feet. What is the width of the rectangle?
Click here to see answer by Fombitz(32388)

Question 256368: how to figure out the equation of the axis of symmetry from f(x)=4x^2 -12x +5
Click here to see answer by Fombitz(32388)

Question 256419: What is the Quadratic Formula Answer to this:
If the quadratic formula is used to solve 2x(x + 5) = 4, what are the solutions?

and

Solve this quadratic equation using the quadratic formula.
x^2 + 8x - 5 = 0
Click here to see answer by Alan3354(69443)

Question 256431: If you are looking at a graph of a quadratic equation how do you determine where the solutions are?
Click here to see answer by solver91311(24713)

Question 256432: divide 12 into two partssuch that sum of thier squares is > than twice thier product by 4
Click here to see answer by solver91311(24713)

Question 256327: Suppose Charlie O�Brian of the Braves hits a
baseball straight upward at 150 ft/sec from a height of 5 ft.
a) Use the formula to determine how long it takes the ball
to return to the earth.
b) Use the accompanying graph to estimate the maximum
height reached by the ball.
Click here to see answer by richwmiller(17219)

Question 256488: 3(x-5)
when
x^2=49
came across this Problem - and I wanted to know how to work it and how it is supposed to be figured out

Click here to see answer by jim_thompson5910(35256)

Question 256369: express the function f(x) = -5x^2 +20x +2 in vertex form
Click here to see answer by Fombitz(32388)

Question 256511: What is the quadratic equation of x^2+19x+48=0?
Please show work.
Click here to see answer by Fombitz(32388)

Question 256515: What is the quadratic formula of x^2+19x+48=0?

Please show work
Click here to see answer by Fombitz(32388)

Question 256525: a) solve 3x^2 - 5x -13 =0 what are the solution? x=?
b) find the x-intercepts of f(x) = 3x^2-5x-13 Help?
Click here to see answer by drk(1908)

Question 256530: I would like to know how to graph the equation
y=(x+1)^2-2
Click here to see answer by drk(1908)

Question 256533: 12x^2-23x=24

Please help me set to zero, then solve and do quadratic formula.
Click here to see answer by drk(1908)

Question 256556: Please find the quadratic formula of 6x^2+10x-4=0

thank you
Click here to see answer by richwmiller(17219)

Question 256563: I am having trouble with a problem.
W=91.4-(10.5+6.7\/v -0.45v)(457-5t)
110
W = wind chill
v+wind velocity
t=air temp
Using the formula above.
Who will feel colder: a person in Minneapolis at 10F with a 15 mph wind or a person in Chicago at 20F with a 25mph wind?
Click here to see answer by richwmiller(17219)

Question 256575: This is a parabola question. I really need help solving. if you could please show me the work and also tell me how to solve. thank you! :)
without drawing the graph of the given equation determine
A) how many x-intercepts the parabola has
B) whether its vertex lies above or below or on the x-axis.
show your work.
1) y=x(squared) - 5x +6
2) y= -x(squared) + 2x -1
Click here to see answer by richwmiller(17219)

Question 256597: state intervals where the function is positive or negative from f(x)=4x^2-12+5
Click here to see answer by richwmiller(17219)

Question 256689: 8x^6-18
Click here to see answer by Alan3354(69443)

Question 256849: How would you write:
(48/n + 3)*(n-2)-48
as a standard form of a quadratic equation?
Click here to see answer by CharlesG2(834)

Question 256940: compute the value of the disscrimnat and give the real solutions to the quadratic equation.
-9x^2-6x-1=0
Click here to see answer by drk(1908)

Question 257080: give exact and approximate solutions to three decimal places.
x^2+3x-5=0
thank you
Click here to see answer by drk(1908)

Question 257102: Decide on ANY ONE quadratic function of your choice whose graph will be a parabola. 1. Will your team's parabola open upwards or downwards?Why?
2. What�s the vertex of your team's parabola?
3. What�s the x-intercepts of your team's parabola?
4. Can you ever have parabolas that open to the left or which open to the right?Why?

Can someone please help me solvve this? I have submitted this question several times and no one has answered it. Thank you!!!
Click here to see answer by drk(1908)

Question 257156: A rectangular field with area 5000 meters squared is enclosed by 300 meters of fencing. Find the dimensions of the field.
Click here to see answer by unlockmath(1688)

Question 257155: When mineral deposits formed a coating 1mm thick on the inside of a pipe, the area through which fluid can flow was reduced by 20%. Find the original inside diameter of the pipe
Click here to see answer by edjones(8007)

Question 257185: How can I factor
18x2 -6x -4????
Click here to see answer by edjones(8007)

Question 257229: This has been asked before and Stan was the one who responded. I can see where he was going, but I don't like to just take an answer, I like to figure it out, too and see where I go. I am not getting the same answer, so I was wondering if someone can tell me where I am going wrong. Here is what I have been doing:
PROBLEM:
Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour, and your city is the first stop on the tour. You need to supply information about projected ticket sales to the box office manager. The box office manager uses this information to anticipate staffing needs until the tickets sell out. You provide the manager with a quadratic equation that models the expected number of ticket sales for each day x. ( is the day tickets go on sale).

And when it comes to figuring out the last day of sales, I do this:
- .2x^2+12x+11
a= -.2 b= 12 c= 11
x= -(-.2)+- sqrt(12^2-4*(-.2)*11/2*(-.2)
x= .2 +- sqrt(144-(-.8)*11/-.4
x= .2 +- sqrt(144-(-8.8)/-.4
x= .2 +- sqrt(152.8)/-.4
And this is where I get lost.....I am getting decimals out the rear and can't figure out what I am doing wrong. Does this even look close??? I would really, really appreciate any help.... I'm about to give up... It's been 2 days working on this stupid problem. Ugh!!
Click here to see answer by Alan3354(69443)

Question 257258: The Expression is Y = 1/36x^2
Our teacher taught us to Use three steps to solve it.
Step One: x= -b/2a
- How would i incorporate that (1/36x^2) expression into this one?
Click here to see answer by drk(1908)

Question 257260: In my textbook it says that xy=4 is a quadratic equation. Is this a mistake? I understand that it is not a linear equation but I thought quadratics had to have second power variables
Can you help
Click here to see answer by drk(1908)

Question 257273: x^2-2x-3=0

Click here to see answer by CharlesG2(834)

Question 257381: Simplify. Write answers without negative exponents. Assume that the variables represent nonzero real numbers. w-4/w^6
Click here to see answer by drk(1908)

Question 257404: wqhat is 400x+16x=
Click here to see answer by richwmiller(17219)

Question 257408: find two consecutive positive odd number given that difference between their reciprocals is 2/63.
Click here to see answer by richwmiller(17219)

Question 257472: what is the axis of symmetry of this equation
y=2x2+8x-2

Click here to see answer by drk(1908)

Question 257472: what is the axis of symmetry of this equation
y=2x2+8x-2

Click here to see answer by stanbon(75887)

Question 257498: Find the possible value or values of n in the quadratic equation 2n2 � 7n + 6 = 0.
Click here to see answer by stanbon(75887)

Question 257409: if each student in a class sends a card to every one of his class mate the total number of cards sent out will be rs 1560. find the number of student in the class.
Click here to see answer by checkley77(12844)

Question 257601: I need to give the exact solutions to 3 decimal places:
x^2 + 2x + 1 = 25
Thank You
Click here to see answer by nerdybill(7384)

Question 257628: The sum of two numbers is 50 and the sum of their squares is 2050 .what are the numbers?

Click here to see answer by shahbazn(6)

Question 257636: For what values of k are the roots of 2x^2-3x + k = 0 equal?
Click here to see answer by richwmiller(17219)

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