Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 221521: ive tried this plenty of times i get stuck because i know how to solve the problom when there are two vairibles but not three please helpp! i have a test on this tommorow
the question on my worksheet is write a quadratic function in standard form whose graph passes through the given points:
(1,-2),(-2,1),(3,6)
Click here to see answer by stanbon(75887)

Question 221499: 1/s+a + 1/s+b = 1/c solve for s
Click here to see answer by RAY100(1637)

Question 221658: Hi, I am having a problem with a question that reads the following: Use the quadratic formula to solve the equation for x in terms of y. 8x^2-8xy=6(1-y^2)=0
Thanks in advance.
Click here to see answer by stanbon(75887)

Question 221721: A ball is thrown vertically upward from the Leaning Tower of Pisa (176 feet high)with an initial velocity of 96 feet per second. The height of the ball is described by the formula -16t^2 + 96t +176. How long will it take the ball to hit the ground?
Please help I have tried to solve this several different ways and none of them are coming out to anything that makes sense. The example in the textbook shows it starting to be solved by factoring out -16 , but I can't see were it can go from there?
Click here to see answer by rapaljer(4671)

Question 221882: Two hundred and forty meters of fencing is available to enclose a rectangular playground. What should be the dimensions of the playground to maximize the area?
Click here to see answer by solver91311(24713)

Question 221675: Hi, I am having a problem with a question that reads the following: Use the quadratic formula to solve the equation for x in terms of y. 8x^2-8xy+6(1-y^2)=0
Thanks in advance.

Click here to see answer by ankor@dixie-net.com(22740)

Question 221970: Please solve using complete the square. My answer does not match the book:
2x^2+8x+1=0
2x^2+8x=-1
2(x^2+4x)=-1
2{(x^2+4x+(4/2)^2}=-1+2times(4/2)^2
2(x^2+4x+4)=7
2(x+2)^2=7
(x+2)^2=7/2
x+2=+or-square root of 7/2
x=-2+or-square root of 7/2
The answer book states x=-2+or-the square root of 14/2
Click here to see answer by solver91311(24713)

Question 222034: hi, my name is sherry....please help me. I really hate word problems.
A bank invested $480,000 last year in mutual funds. th consevativefund earned 8% simpl interest. the growth fund earned 12% simple interest.At he end of theyear , the bank had earned $49,000 from these mutual funds. how much did it invest in each fund? here is what i got for the first part
what is the amount invested at 12% in growth fund?answer; 5880
what is the amount invested at 8% in the conservative fund? answer:3920
i divided each question by 49,ooo and use the percent in te question. is this right? thank you so much
Click here to see answer by rfer(16322)

Question 222086: A 15 inch television set has a width of 12 inches. What is its' height?
Thank you!
Click here to see answer by rfer(16322)

Question 222088: Factor. 77-18w+w^2
Thanks!
Click here to see answer by checkley77(12844)

Question 222088: Factor. 77-18w+w^2
Thanks!
Click here to see answer by rapaljer(4671)

Question 222087: Factor the trinomial: v^3-2v^2-24v
Thank you!
Click here to see answer by checkley77(12844)

Question 222314: Factor completely

Click here to see answer by nerdybill(7384)

Question 222317: For f(x)=5xsquared-8x+2, find f(3h).
What is the question asking from me? What are the steps to solving?
Click here to see answer by solver91311(24713)

Question 222372: Please help me solve this problem:
Find the value of k.
; one root is the negative reciprocal of the other.
Can I also ask for the solution?
Thank you very much.
Click here to see answer by Edwin McCravy(20054)

Question 222410: Find all numbers for which the rational expression is undefined.
q^3-2q / q^2-4
Click here to see answer by rapaljer(4671)

Question 222409: Factor completely. 4w^2+9-12w
thank you
Click here to see answer by rapaljer(4671)

Question 222408: Solve for x. 4x(x-2)-5x(x-1)=2
Thank
Click here to see answer by rapaljer(4671)

Question 222402: Solve. b^2-2b-35=0
Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 222400: Solve. 6x^4-19x^2+15=0
Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 222398: What is the value of the discriminant?
3x^2+10x-7=0
Also, what is the nature of the solutions? Are there 2 real solutions, 1 real solution, or 2 imaginary solutions?
Click here to see answer by jim_thompson5910(35256)

Question 222403: Subtract. Simplify by collecting like radical terms if possible.
9 square root of 75 - 4 square root of 3
Click here to see answer by RAY100(1637)

Question 222390: how do i solve by factoring, x squared-13x+40=0
Click here to see answer by drj(1380)

Question 222647: How do I find an equation using slope and y-intercept
Click here to see answer by rfer(16322)

Question 222640: How do I fing an equation using slope and y-intercept
Click here to see answer by Alan3354(69443)

Question 222684: Factor completely. 7x^7-56x^6+28x^5
Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 222686: Multiply. (b+(1/3))(b+(1/3))
Thank you!
Click here to see answer by jim_thompson5910(35256)

Question 222934: Ive got to solve these problems using Quadratic Equation, but obviously I cant. Help me out, thanks!
a) The product of the second and third consecutive integers is 7 more than the first. Find the numbers.
b) If the area of the triangle is 240 square meters and one leg is 8 more than the other leg, find the (sorry, n/a. please fill in)?
Click here to see answer by edjones(8007)

Question 222963: Find the value of 'm' such that the equation 4x^2-8mx-9=0 has 1 root as the negative of the other
Click here to see answer by jsmallt9(3758)

Question 222958: I need help for this problem. First up, I cant seem to remember what the problem wants me to look for. And I also need to know the answer for that missing question. Here it is: "If the area of the triangle is 240 square meters and one leg is 8 more than the other leg, find the (*)?" THANKS.
Click here to see answer by Theo(13342)

Question 222972: √(121/x2)
Click here to see answer by stanbon(75887)

Question 223003: What would the quadratic eqation be with the roots 2/3 and 4. i got this question on a test and i didnt know how to do it can someone help please?
Click here to see answer by drj(1380)

Question 223641: Ok, so I am asked to write a quadratic equation based on the answer given. I have already done it, but someone is telling me I am wrong, and when I did it again, I came up with a completely different answer! So confused. Anyway, the problem is:
3i , -3i
Here are my original steps:
x-3i =0 or x+3i =0
(x-3i ) (x+3i ) =0
-9+2=0
+9+2=0
+11=0
The second time around I multiplied 9 and 2, coming up with +18=0
I am kind of confused on what to do with the square root value. Do you add it to the equation, as I did the first time, or do you multiply, as I did the second time?
Thank you.
Click here to see answer by tutor_paul(519)

Question 223653: Given:y=2(x-5)^2+63, what is the axis of symmetry?
Click here to see answer by tutor_paul(519)

Question 223694: the difference between the cubes of two consecutive even numbers is 296.find the number?
Click here to see answer by Alan3354(69443)

Question 223667: An artist wants her painting to be in the shape of a golden rectangle. If the length of the painting is 36 inches, then what should be the width?
Click here to see answer by scott8148(6628)

Question 223742: x^2-2x-13=0
Click here to see answer by drj(1380)

Question 223760: Please help me solve this Quadratic equation.
9x^2+6x-4=0
I have solved it down to -6 sqrt 180 / 18.
this is also the same as your sight gave me, but the answer key says this.
-1 sqrt 5 / 5
Click here to see answer by brich(7)

Question 223757: I am stumped on this one. I have to Find all real solutions based on a fractional exponent?
2x-5 +2=0
The book wants me to solve the problem using substitution. However, I can't find an equation that would make sense to me.
I am letting = 5 and w = x
I then come up with -5 +2w+2=0
This is where I draw a blank. I can't find a quadratic equation that will make that statement above true to continue solving.
I am assuming that I am doing this wrong, but beating my head against the book for the last hour now has only produced a squishy sound behind my skull! lol
Thank you in advance for help.
Kevin
Click here to see answer by Alan3354(69443)

Question 223768: x^2 - 4x - 5 =
x^2 + 18 - 11x =
Click here to see answer by edjones(8007)

Question 223839: How do you solve a problem with a negative under a radical sign. For example the square root of -20. is the answer 20i?
Click here to see answer by Alan3354(69443)

Question 223839: How do you solve a problem with a negative under a radical sign. For example the square root of -20. is the answer 20i?
Click here to see answer by drj(1380)

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, 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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