Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 868432: How can you bring up from the river exactly 6 litres of water when you have only two containers, a four litre container and a nine litre container, with which to measure?
Click here to see answer by mananth(16946)

Question 868386: 5x−5+14x−8=16 x2−13x+40
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Click here to see answer by ewatrrr(24785)

Question 868497: 7/6 + 5/x = 3/2x

Click here to see answer by Fombitz(32388)

Question 868672: Solve using square roots (x+7)^2=81
THANK YOU, show all work please! :)
Click here to see answer by Fombitz(32388)

Question 868689: The equation of the parabola C is y = - 2x^2 + 5x.The equation of the line l is y - 4x + 1 = 0.
Fina the intercept of C with the axes.
Click here to see answer by stanbon(75887)

Question 868794: How do I solve x2+4x = 5 by using the quadratic formula?
Click here to see answer by ewatrrr(24785)

Question 869003: Solve by completing the square :
4x^2+16=-24x
help please, show all work thanks I didn't know what category to put it in sorry.
Click here to see answer by Fombitz(32388)

Question 869019: for what value of m does the following equation has equal roots(2m+1)x^2 + 2(m+3)x + (m+5)=0
Click here to see answer by josgarithmetic(39616)

Question 869013: Solve by completing the square :
3x^2-6x-9=0
please show work thanks.
Click here to see answer by josgarithmetic(39616)

Question 869066: what is 2x+4>24
Click here to see answer by ewatrrr(24785)

Question 869071: m/3-3<-6

Click here to see answer by ewatrrr(24785)

Question 869074: -b-2>8
Click here to see answer by Fombitz(32388)

Question 869070: Find the length x if the shaded area is 6,600 cm 2 and y = 16 cm.
Click here to see answer by LinnW(1048)

Question 869240: At the beginning of every football game, the referee flips a coin to see who will kick off. The equation that gives the height (in feet) of the coin tossed in the air is h=6+32t−16t^2. To find the times at which the coin is 18 feet above the ground we substitute 18 for h in the equation, giving us
18=6+32t−16t^2

Solve the equation for t to find the times at which the coin is 18 feet above the ground.
The coin is 18 feet above the ground after___________ seconds.
Click here to see answer by ewatrrr(24785)

Question 869238: (4x+3)(6x-3) positive solution
Click here to see answer by ewatrrr(24785)

Question 767450: A stuntman jumping off a 20-m-high building is modeled by the equation h = 20 � 5t2, where t is the time in seconds. A high-speed camera is ready to film him between 15 m and 10 m above the ground. For which interval of time should the camera film him?
Click here to see answer by noramagz(1)

Question 869239: Margaret shoots an arrow into the air. The equation for the height (in feet) of the tip of the arrow is h=8+64t−16t^2 To find the time at which the arrow is 56 feet above the ground, we replace h with 56 obtain
56=8+64t−16t^2

Solve this equation for t to find the times at which the arrow is 56 feet above the ground.
The arrow is 56 feet above the ground after_______ seconds.
Click here to see answer by lwsshak3(11628)

Question 869314: Can you please help with the following question??? Thank you!!!
Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point.\
F(x) = -x^2 -2x-6

Click here to see answer by josgarithmetic(39616)

Question 869309: What two numbers multiply to get -240 and add to get -5?
Click here to see answer by jim_thompson5910(35256)

Question 869358: if the standard for of an equation is y=1/2x^2=x+5, what is the vertex form?
Click here to see answer by Fombitz(32388)

Question 869327: The entire complex of the Taj Mahal is about 245 meters longer than it is wide. The area of the entire complex is about 167750 square meters. What are the dimensions of the entire complex? Explain your steps in finding the solution.
245w(w)=167750
W^2= 684
W= 26
I'm really stuck please help.
Click here to see answer by Fombitz(32388)

Question 869453: s + t + w =112, if s = 32 & t =w, what is the value of w
Click here to see answer by Fombitz(32388)

Question 869461: This is the word problem: Michael owns a trampoline. He wants to see
how high he can jump. The path of one jump can be modelled by the relation
h=4t^2+80t+12, where h represents Michaels height above the ground in centimetres
And t represents time in seconds,
a) What is the height of the trampoline?
b) What is the maximum height Michael reaches?
c) How long does it take Michael to reach this height?
***THIS IS THE WHOLE QUESTION, PLEASE RESPNS WITH ANSWERS/EXPLANATIONS, IF POSSIBLE! THANKS!
Click here to see answer by Fombitz(32388)

Question 869455: A quadratic relations word problem need the answer to.
Click here to see answer by lenny460(1073)

Question 869495:
The equation of a curve is given by
y = 6x^5+12
Obtain the tangent line to the curve at the point where x = 3. Please enter your answer as an equation in the form: y = m x + c
for some constants m, c.
Click here to see answer by htmentor(1343)

Question 869493:
The equation of a curve is given by
y = 6x^5+12
Obtain the tangent line to the curve at the point where x = 3. Please enter your answer as an equation in the form: y = m x + c
for some constants m, c.
Click here to see answer by josgarithmetic(39616)

Question 869572: Solve x^2-10x-2=0 by completing the square.
Click here to see answer by Fombitz(32388)

Question 869565: Solve 3x^2-6x+1=0 using the quadratic formula.
Click here to see answer by richwmiller(17219)

Question 869708: We are going over Rational expressions. My problem is I don't know what to do after I get the answer for the denominator. But unfortunately for this one I can't even get that far! Can you help me with steps to get through this problem?
5/x^2+5x+6 + 2/x+3
So far I have 5/(x+3)(x+2) + 2(x+2)/x+3(x+2)
Click here to see answer by Alan3354(69443)

Question 869755: convert the following to vertex form by completing the square.
y=2x^2+14x-4
Click here to see answer by josgarithmetic(39616)

Question 869754: covert to vertex form by completing the square.
y=-1/2x^2-7x+5
Click here to see answer by lwsshak3(11628)

Question 869811: Find the real or imaginary solutions by using the quadratic formula. 2x^2+4x=-1

Click here to see answer by mananth(16946)

Question 869811: Find the real or imaginary solutions by using the quadratic formula. 2x^2+4x=-1

Click here to see answer by Fombitz(32388)

Question 869811: Find the real or imaginary solutions by using the quadratic formula. 2x^2+4x=-1

Click here to see answer by ewatrrr(24785)

Question 869821: What are 5 consecutive integers such that the sum of squares of the greater two is equal to the sum of squares of the other three?
Click here to see answer by Fombitz(32388)

Question 869917: I have no idea on this question . I dont know what they want me to graph : a toy rocket is launched from a platform 20 feet above the ground with an initial velocity of 128 feet per second. The equation for the height{in feet} of the rocket t seconds after being launched is h= -16t^2+128t+20
The graph of the height equation is?
a} Do i need vertex ,x interception and y interception?
b} from the question the equation should be 20=-16t^2+128t+20 ?
thank you
Click here to see answer by rothauserc(4718)

Question 869981: Can you lead me through the steps for this problem: (2m-1)(m+3)=-2(m+4) ?
Click here to see answer by mananth(16946)

Question 870033: These problems dont make sense to me:
4(x-4)-2(x+3)≥ 2x-10
Click here to see answer by Alan3354(69443)

Question 870031: Here is the problem:
(x^2-x-116)^3/4 -2=6
Click here to see answer by ewatrrr(24785)

Question 870034: One last question I am stuck on. Please help:
x(9x+7)=4x^2 -4x+36
Click here to see answer by Alan3354(69443)

Question 870034: One last question I am stuck on. Please help:
x(9x+7)=4x^2 -4x+36
Click here to see answer by ewatrrr(24785)

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