Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 934560: What is the value of f (-3) for the linear function f(a) = 6a - 8?

Click here to see answer by rfer(16322)

Question 934648: How would i go about solving the equation 5.2x -1.5x^2 -1= 3 ?
I have tried numerous times by dividing by the coefficient of -1.5 but i just cant seem to get it right. Thank you for your help.
Click here to see answer by josgarithmetic(39617)

Question 934654: find the exact solution for x^2+6x+29=0

Click here to see answer by TimothyLamb(4379)

Question 934683: Thanks for all your help! :)
The heigh h, in meters, that Andreina is above the water t seconds after beginning her dive is given by the formula h = -5t^2 + 6t + 10. After how many seconds will Andreina hit the water, rounded to the nearest tenth of a second?

Click here to see answer by rothauserc(4718)

Question 934725: Which situation can be represented by y=12x−4?A
The number of eggs, y, in x dozen eggs for sale after 4 dozen eggs are soldB The cost, y, of buying x movie tickets that sell for $8 eachC The cost, y, after a $4 discount, of buying x T-shirts that sell for $12 eachD The number of inches, y, in an x-foot-tall tree after cutting off 4 feet
Click here to see answer by stanbon(75887)

Question 934727: What is the missing coefficient in the equation given that p(2) = 128?
p(x) = _________ x5
Click here to see answer by stanbon(75887)

Question 934780: Please help me solve this problem:
two numbers have a different of 3.the sum of their square is 89.find the number
Click here to see answer by JulietG(1812)

Question 934780: Please help me solve this problem:
two numbers have a different of 3.the sum of their square is 89.find the number
Click here to see answer by MathTherapy(10552)

Question 933994: The problem involves constructing a rectangular planter.
The area of the bottom needs to be 90 ft sq.
Length of planter needs to be three feet longer than twice its width.
What should the dimensions of the bottom of the planter be?
This is an 8th grade algebra problem.
We know the given answer is 6 ft by 15 ft.
How do we factor this? We are trying to figure the structure of solving the problem.
Click here to see answer by Fombitz(32388)

Question 935082: X^2-4x-7=0
Click here to see answer by MathLover1(20849)

Question 935254: x^2-x +1/8=0
Click here to see answer by oscargut(2103)

Question 935253: x^2-x 1/8=0
Click here to see answer by oscargut(2103)

Question 935253: x^2-x 1/8=0
Click here to see answer by Alan3354(69443)

Question 935284: Which statement is true about this function f(x)= -4x^2-8x+4
a) the range is less than or equal to 4
b) the range is less than or equal to 8
c) the domain is greater than or equal to 0
d) the domain is greater than or equal to -1
Click here to see answer by Rosseta786(21)

Question 935300: Ms. Williams invested $9500 in an account that earned interest at an annual rate of 8%, compounded quarterly. If Ms. Williams does not make any withdrawals or deposits, which of the following equations represents the amount of money, A, in dollars, in her account in 20 years?
a) A=9500(1.02)^2
b) A=9500(1.02)^80
c) A=9500(1.08)^20
d) A=9500(1.08)^80
Click here to see answer by MathLover1(20849)

Question 935314: The sum of two number is 30 and the difference of their square is 180.find the number

Click here to see answer by MathLover1(20849)

Question 935362: Find the missing length of side C
A=9 B=2 C=?
It is under Quadratic Equations on my Online Homework and is showing a triangle, saying C is the hypotenuse.
It gives 3 possible answers too.
A 18 (with a thing over it)
B 85 (with no thing over it)
C 85 (with a thing over it)
Click here to see answer by oscargut(2103)

Question 935364: Find the missing length of the Triangle, under Quadratic
C = (with the thing over it) 29 B = (no thing over it) 5 C = ????

No choices were given so I have to do it myself.
Please help :)
Click here to see answer by oscargut(2103)

Question 935365: Solve the equation for R
7 = 2 (r+1) exponent2 -3

Click here to see answer by oscargut(2103)

Question 935419: Write the quadratic equation whose roots are 1 and 6,and whose leading coefficient is 3?

Click here to see answer by josgarithmetic(39617)

Question 935419: Write the quadratic equation whose roots are 1 and 6,and whose leading coefficient is 3?

Click here to see answer by TimothyLamb(4379)

Question 935476: 12x^2 2x 8=0 find the value of x
Click here to see answer by Alan3354(69443)

Question 935526: Hi there. Can "x^2 - 10x + 22 = -2" be solved by taking the square root? Can "4x^2 + 8x + 3 = 0" be solved by taking the square root? If so, please show me an explanation.
Thank you for all your help! :D
Click here to see answer by TimothyLamb(4379)

Question 935597: quadratic equation whose roots are -6 and 3, and whose leading coefficient is 4
Click here to see answer by josgarithmetic(39617)

Question 933464: f(x) = -6x-1 and g(x) =4x^2. select the solution for (fg)(x)

Click here to see answer by Fombitz(32388)

Question 935704: Find a^2+b^2+c^2 If a+b=c+6 and ab-ac=bc-1 please help me to solve this kind of math problem I am really eager to know how to solve it . I just know that the answer is 38 But how ? Thank you in advance
Click here to see answer by jim_thompson5910(35256)

Question 935860: quadratic equation roots are -5 and -1, coefficient 3
Click here to see answer by KMST(5328)

Question 935865: quadratic equation roots are -1 and 4 , coefficient 1
Click here to see answer by MathLover1(20849)

Question 935862: quadratic equation roots are -1 and 2 , coefficient 4
Click here to see answer by stanbon(75887)

Question 935861: quadratic equation roots are -1 and 2, leading coefficient 4
Click here to see answer by TimothyLamb(4379)

Question 935877: please s substitute 3.5 for x in 224 -60 x + 4x^2
Click here to see answer by Theo(13342)

Question 935880: find discriminant of the following quadratic equation and examine the nature of real roots(if they exist) 7y^2 + 4y +5 = 0
Click here to see answer by Edwin McCravy(20054)

Question 935880: find discriminant of the following quadratic equation and examine the nature of real roots(if they exist) 7y^2 + 4y +5 = 0
Click here to see answer by Theo(13342)

Question 934057: use the discriminant to determine the number
of real roots of each equation and then solve each equation using
the quadratic formula.

2t^2 + 1 = 6t
Click here to see answer by Fombitz(32388)

Question 935936: Solve the equation to the nearest thousandth place: 6x^2-8x-7=0
Click here to see answer by TimothyLamb(4379)

Question 936022: The quadrilateral formed by joining the midpoints of the sides of a parallelogram successively is
Click here to see answer by srinivas.g(540)

Question 936022: The quadrilateral formed by joining the midpoints of the sides of a parallelogram successively is
Click here to see answer by Edwin McCravy(20054)

Question 936022: The quadrilateral formed by joining the midpoints of the sides of a parallelogram successively is
Click here to see answer by AnlytcPhil(1806)

Question 936071: Must complete the square for each quadratic expression in order to form a perfect square trinomial

X (exponent)2 + x
Click here to see answer by stanbon(75887)

Question 932259: Find a quadratic model for the given data. (Round your coefficients to three decimal places.)
{(1, -1), (2, 1), (4, 8), (5, 14), (6, 25)}
y = _____________
Click here to see answer by AnlytcPhil(1806)

Question 936223: transform the quadratic function y= -2x^2-12x-10 into vertex form. find the vertex, x and y intercepts.
Click here to see answer by ewatrrr(24785)

Question 936233: transform the quadratic function y=-2x^2-12x-10 into vertex form. find the vertex, x and y intercepts.
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