Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 479900: The height(in feet) of a firework t seconds after it is launched is given by H(t) = 3+180t-16t^
A. the firework is to explode at a height of at least 450 ft.
B. Draw a graph of the height of the firework over time, indicating the times when the firwork is at a height of at least 450 feet.
Click here to see answer by ankor@dixie-net.com(22740)

Question 479996: Subtract the polynomials (2w^2 +4w+4)(9w^2+4)
Click here to see answer by Aswathy(23)

Question 480281: the total profit for a company to manufacture and sell x items per week is: p=-5x^2+40x-300. How many items must be sold to obtain a weekly profit of $300?
Click here to see answer by solver91311(24713)

Question 480361: Identify the axis of symmetry. y = x2 � 5x + 1

Click here to see answer by Alan3354(69443)

Question 480369: Find two consecutive positive integers such that the sum of their squares is 61.
Click here to see answer by wilft1(217)

Question 480369: Find two consecutive positive integers such that the sum of their squares is 61.
Click here to see answer by Alan3354(69443)

Question 480372: -9(x-3)^(2)=-7 Please solve for x.
Click here to see answer by Tatiana_Stebko(1539)

Question 480463: At the local convenience store, 6 bags of chips and 4 containers of dip cost $34. However, 4 bags of chips and 2 containers of dip cost $20. What is the cost of one bag of chips and one container of dip?
Click here to see answer by mathstutor494(120)

Question 480470: x=?
in Equation x^2+4=9

Click here to see answer by Aswathy(23)

Question 480470: x=?
in Equation x^2+4=9

Click here to see answer by mathstutor494(120)

Question 480497: find the roots of the quadratic equation 2x^2-5x+3=0
Click here to see answer by ewatrrr(24785)

Question 480575: 12x^2+7x-12
Factor the quadratic espression completely, and find the roots of the expression.
Click here to see answer by solver91311(24713)

Question 480572: (3)^1/2y^2-4y-7(3)=0
Use the descirminant to determine the number of solutions ot the quadratic equation, and is the solutions real or complex? Not necessary to find the roots, just determine the number and types of solutions
Click here to see answer by solver91311(24713)

Question 480584: 12x^2+7x-12
Factor the Quadratic expression completely find the roots of the expression
Click here to see answer by stanbon(75887)

Question 480584: 12x^2+7x-12
Factor the Quadratic expression completely find the roots of the expression
Click here to see answer by solver91311(24713)

Question 480584: 12x^2+7x-12
Factor the Quadratic expression completely find the roots of the expression
Click here to see answer by ewatrrr(24785)

Question 480446: a picture has a height that is 4/3 its width.it is to be enlarged to have an area of 192 square inches. what will be the dimensions of the enlargement?
Click here to see answer by ankor@dixie-net.com(22740)

Question 480452: what is the quadratic equation of x+3/2=2/x

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

Question 480750: Solve the following 15x^4-28x^2+5=0
Click here to see answer by emargo19(101)

Question 480732: What is the solution to the equation x(x-1)=0?
Click here to see answer by nerdybill(7384)

Question 480718: I do not understand this at all. This is not my best subject and I need help please Using the Discriminant Test, what would be your conclusion about the number and nature of the roots of this quadratic equation?
3x2 - 5x � 2 = 0
Click here to see answer by lwsshak3(11628)

Question 480822: The 84,000 million liters of water saved in Sydney, Australia, in 1 year represents 400 more million liters than double the amount saved in 2006. How much water was saved in Sydney, Australia, in 2006? (I think I might have to use th formula: W(t)=2tsquared-13t+39)
Click here to see answer by Theo(13342)

Question 480860: The formula N=2x^2+4x+1 represents the number of households. N, in thousands, in a certain city that have a computer x years after 1990. According to the formula, in what year were there 97 thousand households with computers in this city?
Click here to see answer by ewatrrr(24785)

Question 480857: A 21 inch square TV is on sale at the local electronics store. If 21 inches is the measure of the diagonal of the screen, use the Pythagorean theorem to find the length of the side of the screen.
Click here to see answer by ewatrrr(24785)

Question 480853: An object is thrown upward from the top of a 160 foot building with an initial velocity of 48 feet per second. The height h of the object after t seconds is given by the quadratic equation h= 16t2+48t+160. When will the object hit the ground?
Click here to see answer by mananth(16946)

Question 480854: Each cycle of a screen saver program generates and then erases numbers of little animated figures called froobies. The formula P=-2x^2+106x-674 models the population, P, of froobies after x minutes within a cycle. How many minutes into a cycle will the froobie population reach 118?
Click here to see answer by nerdybill(7384)

Question 480940: 5x-9y=-17
5x+33= y
solve and find the ordered pair
Click here to see answer by ewatrrr(24785)

Question 480724: The quadric formula will calculate the solutions of any quadric equation.
A quadratic equation is an equation that can be written as
ax^2 +bx+c where a ≠ 0.
A quadric equation must have a squared term as its highest power.
The solution of a quadric equation is the value of x when you set the equation equal to 0,
or when you solve the following general equation: 0=ax^2+bx+c
Example: a=1, b=2, c=1 y=x^2+2x+1

Using the quadratic formula to solve this equation just substitute a,b, and c into the formula
Click here to see answer by richard1234(7193)

Question 481105: solving quadratic equations by completing the square

HELP PLEASE
im so confusedddddd -3 doesnt add up to 1

help???

x^2+x-3=0

thank you!! will give beautiful review
Click here to see answer by mananth(16946)

Question 481104: solving quadratic equations by completing the square

HELP PLEASE

x^2+4+1=0
or like
x^2+x-1=0

thank you!!
Click here to see answer by nerdybill(7384)

Question 481147: The product of two consecutive integers is 4 less than 4 times their sum. Find them
Click here to see answer by stanbon(75887)

Question 481146: Don fenced in a rectangular garden in his yard. The length of the rectangle is 5 feet longer than the width and the perimeter is 62 feet. What is the width of the rectangle?
Click here to see answer by stanbon(75887)

Question 481141: Let x represent the number of pounds of apples sold at $1.49 per pound, and let y represent the total price paid for the apples. Write an equation for this situation. Then give the ordered pair with an x value of 4 associated with this equation.
Click here to see answer by stanbon(75887)

Question 481143: A car rental company charges $24 per day to rent a particular type of car and $0.17 per mile. Lisa is charged $52.90 for a one day rental. How many miles did she drive?
Click here to see answer by josmiceli(19441)

Question 481144: A triangular garden has an area of 90 sq feet. It's height is 8 feet more than its base. Find the measure of the base.
Click here to see answer by nerdybill(7384)

Question 481235: 25x-50=-23/x Please solve for x.
Click here to see answer by MathLover1(20849)

Question 481264: Three consecutive odd integers are such that the square of the second is 96 less than the square of the third. Find the three integers.
Click here to see answer by ccs2011(207)

Question 481236: How many solutions are there to the quadratic equation
3x2 - 7x - 2 = 0
Click here to see answer by Tatiana_Stebko(1539)

Question 481263: factor the quadratic expression completely, and find the roots of the expression.
66x2 - 130x + 56

Click here to see answer by ccs2011(207)

Question 481327: use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. Note: It is not necessary to find the roots; just determine the number and types of solutions
s2 - 4s + 4 = 0
Click here to see answer by richard1234(7193)

Question 480610: I don't know how to solve this problem using the quadratic formula.
x^2 - 4x + 2 = 0
Click here to see answer by richard1234(7193)

Question 481460: I need help with this problem.
solve x^4+10x^2+9=0
Thank you!
Click here to see answer by Earlsdon(6294)

Question 481569: Solve for X by factoring. (x-6)^2 = 49
Click here to see answer by jim_thompson5910(35256)

Question 481616: write a quadric equation having the given numbers as solutions -6 and -1
Click here to see answer by jim_thompson5910(35256)

Question 481771: Can someone please help me factorise the following
1) 18x^2-96x+128
2) 45y^4z-80y^2z^3
3) x^4+5x^3-7x^2-5x+6 given(x^2-1) is a factor.
Thank you very much
Click here to see answer by stanbon(75887)

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