Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 480732: What is the solution to the equation x(x-1)=0?
Click here to see answer by nerdybill(7003)

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(6761)

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(3504)

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(10682)

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(10682)

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(12270)

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(7003)

Question 480940: 5x-9y=-17
5x+33= y
solve and find the ordered pair
Click here to see answer by ewatrrr(10682)

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(5390)

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(12270)

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(7003)

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(57967)

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(57967)

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(57967)

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(9817)

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(7003)

Question 481235: 25x-50=-23/x Please solve for x.
Click here to see answer by MathLover1(6812)

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(1326)

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(5390)

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(5390)

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(28715)

Question 481616: write a quadric equation having the given numbers as solutions -6 and -1
Click here to see answer by jim_thompson5910(28715)

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(57967)

Question 481782: hi i need some help. here is the qns
Find the values of k for which the quadratic equation 9x^2-kx+(k-7)=0 has
(i) one positive and one negative root
(ii) one root twice the value of the other
Click here to see answer by mathstutor494(95)

Question 481964: If the two solutions of the quadratic equation 4x^2+4x+k=0 are equal, find k
I would greatly appreciate the help. Thank you
Click here to see answer by jim_thompson5910(28715)

Question 481964: If the two solutions of the quadratic equation 4x^2+4x+k=0 are equal, find k
I would greatly appreciate the help. Thank you
Click here to see answer by stanbon(57967)

Question 481966: if the roots of a quadratic equation are -3/2 and 4/5 find one possible equation.
Please help
Click here to see answer by jim_thompson5910(28715)

Question 481966: if the roots of a quadratic equation are -3/2 and 4/5 find one possible equation.
Please help
Click here to see answer by solver91311(17077)

Question 482033: I am not sure how to start this to figure out the last day of tickets.
Use the quadratic equation to determine the last day that tickets will be sold. Write your answer in terms of the number of days after ticket sales begin. (x=1 is the day tickets go on sale).

Tickets=-0.4x^2+9x+11
Click here to see answer by jorel1380(2518)

Question 482315: Can a quadratic equation solution be determined by looking at a graph, and how?
Click here to see answer by ankor@dixie-net.com(15746)

Question 482438: Solve Navigation. The current in a typical Mississippi River shipping route flows at a rate of 4 mph. In order for a barge to travel 24 mi upriver and then return in a total of 5 hr, approximately how fast must the barge be able to travel in still water?
Click here to see answer by ankor@dixie-net.com(15746)

Question 482516: what is x in the equation 3x squared + 2x =0
Click here to see answer by LagrangeSon678(5)

Question 482967: 8x^2+10x-7

Click here to see answer by Student3354(13)

Question 483110: what is x?
-2/10x + 2/5(x - 2)= -1
Click here to see answer by rfer(12730)

Question 483204: y^2+6y+34=0 solve by "completing the square"
Click here to see answer by stanbon(57967)

Question 483199: (x+5)(x+3)=3 solve by using quadratic formula
Click here to see answer by mananth(12270)

Question 483284: A chain store manager has been told by the main office that daily profit, P, is related to the number of clerks working that day, x, according to the equation P = -25x2 + 500x. What number of clerks will maximize the profit?
Click here to see answer by mathstutor494(95)

Question 483378: I have tried to solve this equation using the quadratic formula but I end up with 4 sqrt 8 / 2 instead of 2 / sqrt 2 . the equation is x^2 - 4x + 2 = 0
Click here to see answer by jorel1380(2518)

Question 483300: Quadratic equations, which are expressed in the form of ax2 + bx + c = 0, where a does not equal 0, may have how many solutions? Explain why?
Think of a linear equation. How many solutions may that have?
Can you extend this to a an n-degree equation?

Click here to see answer by richard1234(5390)

Question 483542: i have no idea where to go on this problem please help
"joe said, if five times my age in 8 years is subtracted from the square of my present age, the result is 86." find joe's age
Click here to see answer by Learners04(5)

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