Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 252419: find the value of p if the roots of the equation differ by 5
Click here to see answer by hokies(65)

Question 252421: Show that the points (4,5),(1,1) and (-2,5) are the vertices of an isosceles triangle. Find the area.
Click here to see answer by MRperkins(300)

Question 252441: one of the roots of the equation 5x^2 + kx = 4 is x = -2 the other root is
x = ...what ?
a -5/2 b -2/5 c 2/5 d 2 e 5/2
Click here to see answer by richwmiller(9135)

Question 252441: one of the roots of the equation 5x^2 + kx = 4 is x = -2 the other root is
x = ...what ?
a -5/2 b -2/5 c 2/5 d 2 e 5/2
Click here to see answer by stanbon(57290)

Question 252447: what is Qualitative and central tendency?
Click here to see answer by drk(1908)

Question 252483: a rectangle's length is y cm. Its width is 5 cm. Its perimeter is 34 cm. Find the length of the rectangle
Click here to see answer by drk(1908)

Question 252554: If x^2 −3x − 21 = y and x^2 − 4x −18 = y , what is the product of
(x − 5)(x − 7)(x + 2)(x + 3) in terms of y?
Click here to see answer by Edwin McCravy(8895)

Question 252549: If a and b are roots of 7x^2 − 2002x +182 = 0 , find the value of 1/a + 1/b
Click here to see answer by Alan3354(30993)

Question 252549: If a and b are roots of 7x^2 − 2002x +182 = 0 , find the value of 1/a + 1/b
Click here to see answer by JimboP1977(308)

Question 252536: How many different values of n are there such that n is a natural number and
n^2 - 20 is a perfect square?
(a) 1 (b) 2 (c) 3 (d) 4 (e) infinitely many
Click here to see answer by Alan3354(30993)

Question 252528: find the sum of all of the real values of x satisfying the following equation
(x^2 - 5x + 5)^x^2 - 17x + 70 = 1
a 5 b 10 c 17 d 22 e 27
Click here to see answer by drk(1908)

Question 252575: Which of the following quadratic equations has solutions x=6a and x=-3b?
A. x^2 - 18ab=0
B. x^2 - x(3b-6a)-18ab=0
C. x^2 - x(3b+6a) +18ab= 0
D. x^2 + x(3b-6a)- 18ab=0
E. x^2 + x(3b+6a) + 18ab=0
Click here to see answer by Alan3354(30993)

Question 252607: What is the value of x in m=(4x)^3+b/a^2+b=(20)?
Click here to see answer by drk(1908)

Question 252615: its a word problem :
michelle is 5 years younger than cindy . janet is ten years less than twice of cindy age . kenny is 10 years old . the ratio of janets age equal s the ratio of michelles age to kenny's age . how old are cindy , janet, and michelle ?
Click here to see answer by palanisamy(496)

Question 252647: p(d)= 1+d/33, gives the pressure in the atmosphere(atm) at a depth(d) in the sea
Note p(0)=1 atm, p(33)=2
find the pressure at 100 feet.
Click here to see answer by jim_thompson5910(28536)

Question 252662: Write the equation of the quadratic function with roots 0 and 2 and a vertex at (1, 5).

Click here to see answer by Alan3354(30993)

Question 252645: m=0 (0,-7)
equation of the line is
y=
Click here to see answer by drk(1908)

Question 252643: In 1920, the record for a certain race was 46.6 sec. In 1940 it was 46.2 sec.
Let R(t)= the record in the race and t= the number of years since 1920.
Find the linear function that fits the data
R(t)=
What is the predicted record for 2003? 2006?
In what year will the record be 44.62 sec?

Click here to see answer by drk(1908)

Question 252702: convert y=x^2+6x-10 to vertex form completing the square.
convert y=x^2-9x+3 to vertex form completing the square.
Click here to see answer by drk(1908)

Question 252706: an emergency flare is fired from a vehicle. its height,h metres, is given by h(t) =-5t^2+35t+50,where t is the time in seconds. what is the maximum height reached by the flare? how long does it take to reach the maximum height? how long does it take the flare to hit the ground?
Click here to see answer by soccer139white(1)

Question 252705: determine the vertex of quadratic function stating axis of symmetry,minimum or maximum value,and domain and range on y=10x^2+5x-1
and y=-24x^2+18x+11
I am not understanding even though i read over examples.
Click here to see answer by drk(1908)

Question 252708: convert y=3x^2+18x+30 to vertex form by completing the square
convert y= -2x^2+28x-7 to vertex form by completing the square
trying to figure this out.
Click here to see answer by richwmiller(9135)

Question 252802: Can the following equation be solved by the method "completing the square"
4x^2 – 7x – 2 = 0
Click here to see answer by ptaylor(2048)

Question 252802: Can the following equation be solved by the method "completing the square"
4x^2 – 7x – 2 = 0
Click here to see answer by Theo(3458)

Question 249926: How to solve a quadratic equation

Click here to see answer by rapaljer(4667)

Question 252921: For a certain strain of bacteria? k is 0.134 when t is measured in days. How long will it take 4 bacteria to increase to 140?
Click here to see answer by drk(1908)

Question 250347: How would you write the equation of a parabola in vertex from that has the vertex (0,3) and a point (-4,-45)?
Click here to see answer by drk(1908)

Question 252957: What is the solution of the quadratic equation..x square+6x-3=0

Click here to see answer by drk(1908)

Question 252957: What is the solution of the quadratic equation..x square+6x-3=0

Click here to see answer by richwmiller(9135)

Question 253014: Band A charges $600 to play for the entire evening. Band B charges $350 plus $1.25 for each ticket sold. Find the number of ticket for which the cost of the two bands will be equal.
A caterer charges a fixed cost for preparing dinner plus an additional cost for each person served. you know the cost for 100 students will be $750 and the cost for 150 students will be $1050. Find the caterer's fixed cost and the cost per student served.
(I have the answer to these two questions, i just need help with one question.)
***Assume that a total of 200 students attend the dance, what would the cost per ticket be i would need to cover my expenses?***
Thank You!
Click here to see answer by richwmiller(9135)

Question 253084: Please help me solve and describe , and graph too.
Click here to see answer by hokies(65)

Question 253100: The square of a negative integer minus itself is 110. Find the integer.
Click here to see answer by hokies(65)

Question 253100: The square of a negative integer minus itself is 110. Find the integer.
Click here to see answer by jim_thompson5910(28536)

Question 253123: the sum of the reciprocals of two consecutive even intergers is 11/60. Find the integers
Click here to see answer by ankor@dixie-net.com(15646)

Question 253132: Determine the quadratic equation whose roots have a sum of 12 and the roots difference is 4i. (Write a let statement to identify your roots)
Click here to see answer by richwmiller(9135)

Question 253136: How do you factor 3x squared + 31x + 36
Click here to see answer by Alan3354(30993)

Question 253136: How do you factor 3x squared + 31x + 36
Click here to see answer by Greenfinch(383)

Question 250036: what is (x-3)^2+4
Click here to see answer by Nikki456(9)

Question 253222: write an equation of a quadratic function in standard form that has one zero of: 7-(radical 3)
Click here to see answer by drk(1908)

Question 253227: state all the values of k that would make the following have imaginary roots: x^2-9x+k=0
please show work
Click here to see answer by drk(1908)

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