Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 444648: What are the solutions to the quadratic function: 3x^2-11x-4=0.
Click here to see answer by chriswen(106)

Question 444661: the question is write and solve an equation to find the length and with of the rectangle whose width os 3 less than the length. the area is 4cm
Click here to see answer by oberobic(2304)

Question 444689: My son and i have been working on a quadratic formula questions for a few hours now, literally, and we cannot figure it out. The problem reads:
The length of a rectangular yard shown in the figure is 50 less than 4 times the width. One side of the yard is bordered by the Potomac River. If the area of the yard is 16100 square feet, how many feet of the yard is alongside the river?
Potomac River
_________________________
| |
| |
| |x ft
|________________________|
4x-50
We think the quadratic equation would be 4x^2-50x-16100=0
Are we thinking about this wrong because it is driving us crazy...
Click here to see answer by rfer(16322)

Question 444733: Determine the coordinates of the x-intercepts for the quadratic equation �x2 + 5x � 4 = 0
Click here to see answer by oberobic(2304)

Question 444733: Determine the coordinates of the x-intercepts for the quadratic equation �x2 + 5x � 4 = 0
Click here to see answer by stanbon(75887)

Question 444975: During a chemistry experiement, the cork in a 0.5 foot tall beaker with an effervescent solution pops off with an initial velocity of 20 feet per second.
How many seconds does it take for the cork to hit the table?
Click here to see answer by solver91311(24713)

Question 445170: Hello there,
I'm having issues with word problems.
The sum of two numbers is 17 and their product is 42. Find the two numbers.
Click here to see answer by scott8148(6628)

Question 445089: Fireworks are shot upward with an intial velocity of 125 feet per second from a paltform 3 feet abouve the ground. use the model h= -16t squared + vt + s to find how long it will take the rocket to hit the ground?
Click here to see answer by ankor@dixie-net.com(22740)

Question 445401: A rectangular garden with dimensions 18yd by 24yd is to have a sidewalk of uniform width placed completely around the inside of its border in such a way that the area of the remaining garden is 216 yd. how wide is the sidewalk?
Click here to see answer by mananth(16946)

Question 445411: Find the integral
∫▒(x √(1-x^2)) dx
Click here to see answer by Edwin McCravy(20054)

Question 445514: What is the answer to x^2-7x-8=0
Click here to see answer by rwm(914)

Question 445514: What is the answer to x^2-7x-8=0
Click here to see answer by stanbon(75887)

Question 445514: What is the answer to x^2-7x-8=0
Click here to see answer by josmiceli(19441)

Question 445618: The area of a circle with radius r is given by the formula A=πr^2. If a circle has area 169π square inches, what is the radius?
Click here to see answer by richard1234(7193)

Question 445623: Use the quadratic formula to solve.
0.6x^2=1.2x+0.6
(Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.)
Click here to see answer by chriswen(106)

Question 445700: (x - 2)(x + 6)
Click here to see answer by rfer(16322)

Question 445732: Pleas help me solve this equation: (((2x^2+5x+3=0)))
Click here to see answer by nerdybill(7384)

Question 445818: The length of a rectangle is 3 feet greater than its width. The area of the rectangle is 108ft square. Find the length and width.
Click here to see answer by jorel1380(3719)

Question 445907: Please help me with this word problem: A 24-foot ladder resting against a house reaches a windowsill 16 feet above the ground. How far is the foot of the ladder from the foundation of the house? Express your answer to the nearest tenth of a foot.
Click here to see answer by stanbon(75887)

Question 445946: 6^2+3x-18=0
Click here to see answer by Gogonati(855)

Question 446032: confused the answer i got was -300 but confused on the second part.For the following equation, state the value of the discriminant and then describe the nature of the solutions.-5x^2+10x-20=0 What is the value of the discriminant?
Click here to see answer by stanbon(75887)

Question 446103: 5/2x+3 - 1/x-6 = 0
Click here to see answer by Leaf W.(135)

Question 446108: VERIFY each trigonometric identity:
I'd appreciate any help:)
a) (1/cos^2x)-(1/cot^2x)=1
b) (sinx/1+cosx)=(1-cosx/sinx)
c) (secx/sinx)-(sinx/cosx)=cotx
d) (cos^2x/1-sinx)=sinx+1
Click here to see answer by stanbon(75887)

Question 446210: 2 2x +5x_3=0 (i m yr new student & my name is fareeha & i study in class 8 plz provide me the solution of my question )thank you ......
Click here to see answer by Alan3354(69443)

Question 446089: The length of the top of a table is 7m greater than the width.
the area is 78m^2. find the dimensions of the table
Click here to see answer by chriswen(106)

Question 446211: 2 2x +5x-3=0 ( i m yr new student my name is fareeha & i study in class 8 )....
Click here to see answer by stanbon(75887)

Question 446322: The length of the top of a table is 4m greater than the width. The area is 77m^2. Find the dimensions of the table
Click here to see answer by chriswen(106)

Question 446295: factor 0= 5X sqaured minus 2x plus 42
Click here to see answer by chriswen(106)

Question 446466: could you please me to how to obtain quadratic equations like x^2-2*square root of 5+3
Click here to see answer by The One(11)

Question 446557: Solver for x
square root of 3x+1 plus 3 = x
Click here to see answer by ewatrrr(24785)

Question 446568: I am thinking of three consecutive integers. The square of the largest is 12 less than the sum of the squares of the other two. Find the integers.
Click here to see answer by chriswen(106)

Question 446670: How do you solve x^2-10x+25=6?
Click here to see answer by rfer(16322)

Question 446670: How do you solve x^2-10x+25=6?
Click here to see answer by MathLover1(20849)

Question 446744: for the following equation, state the value of the discriminant and then describve the nature of the solution -8x^2+5x+13=0
Click here to see answer by chriswen(106)

Question 446754: The sum of the roots of 8x� - 2x = 1 is:
Click here to see answer by rfadrogane(214)

Question 446754: The sum of the roots of 8x� - 2x = 1 is:
Click here to see answer by josmiceli(19441)

Question 446747: rewrite the following expression with positive exponenets (13xy)^-5/
Click here to see answer by benni1013(206)

Question 446753: The values of a, b, and c in the equation x� + 6x - 55 = 0 are:
Click here to see answer by rfadrogane(214)

Question 446795: I am confused as to how i would work this out. Please help?
*Determine the nature of the solutions of the equation.
8t^2-9t=0
Click here to see answer by sudhanshu_kmr(1152)

Question 446961: Please help me factor this:
Click here to see answer by ankor@dixie-net.com(22740)

Question 447037: Write a quadratic equation that has as solutions the given pair of numbers: -7/2 and 1/4. Please help, I don't have the slightest idea where to begin.
Click here to see answer by ankor@dixie-net.com(22740)

Question 447108: find 3n^2 if n(n+5)=-4
Click here to see answer by chriswen(106)

Question 447177: x^2+14x+40=-5
Click here to see answer by chriswen(106)

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