Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 264963: Two pipes can fill a large tank in 10 hours. One of the pipes, used alone, takes 15 hours longer than the other to fill the tank. How long would each pipe take to fill the tank alone?
Click here to see answer by stanbon(57223)

Question 264969: Solve each quadratic equation by completing the square.
4x(squared)=-2x+1
I get it where there are variables on one side and constants on the other, but the fractions are throwing me off.
Click here to see answer by stanbon(57223)

Question 264944: 2x^2-6x-14=0
Click here to see answer by checkley77(12569)

Question 264943: 3x=1-1/x
Click here to see answer by checkley77(12569)

Question 264967: If you have two parabolas formed by the two equations: y=x^2+2 and y=-x^2+5 at what point(s) do these two parabolas intersect each other?
Click here to see answer by Alan3354(30965)

Question 265035: solve.
6x^4-5x^2+1=0
Please help.
Click here to see answer by stanbon(57223)

Question 265170: Solve the equation 8x3 + 4x2 − 18x − 9 = 0 algebraically for all values of x.
Click here to see answer by palanisamy(496)

Question 265118: 2x to the second power+5x
Click here to see answer by checkley77(12569)

Question 265220: Looking at a graph of a quadratic equation, how do you determine where the solutions are?
Thank you
Click here to see answer by Alan3354(30965)

Question 265220: Looking at a graph of a quadratic equation, how do you determine where the solutions are?
Thank you
Click here to see answer by stanbon(57223)

Question 265280: What is the intersection of the quadratic equations -x^2+1 and x^2-2x-3
Click here to see answer by stanbon(57223)

Question 265270: True or False. The y-coordinate is positive in quadrants I and IV?
Click here to see answer by rfer(12645)

Question 265412: The coefficients of a quadratic equation are positive integers and the difference between the two roots of the equation is 2. If one of the roots is -3/4, find the equation.
Click here to see answer by Edwin McCravy(8880)

Question 265470: Write a quadratic equation having the given numbers as solutions.
4i, -4i
Click here to see answer by Alan3354(30965)

Question 265488: how do you write an quadratic equation that have given number7,-7 as the solution
Click here to see answer by CharlesG2(828)

Question 265537: I would like you know how to solve the following algebra equation?
6p2 + p/15p - 2p - 4/7p - 13 = 2p - 1/5
Click here to see answer by Alan3354(30965)

Question 265708: how do you find the other points to put on a graph in a quadratic equation after finding the vertex
Click here to see answer by drk(1908)

Question 265890: Complete the square.Then write the trinominal square in factor form.
x^2 + 8x
Click here to see answer by JBarnum(2044)

Question 265894: Write a quadratic equation having the given numbers as a solution.
-7,4
Click here to see answer by unlockmath(1599)

Question 265889: use the quadratic formula to determine the x-intercepts(if any)of the following function.
f(x) = -x^2 + 2x -2
Click here to see answer by vksarvepalli(154)

Question 265881: Sue rowed her boat across Lake Bend and back in 3 hours. If her rate returning was 2 mph less than the rate going, and if the distance each way was 7 miles, find her rate going.

I am having a hard time setting up this problem.
Click here to see answer by mananth(12270)

Question 265936: how do i solve this problem x^2 + 10x + 16 = 0

Click here to see answer by palanisamy(496)

Question 265972: Solve the formula for the given letter.Assume all variables represent nonegative numbers.
a^2+k^2=f^2, for a
Click here to see answer by Edwin McCravy(8880)

Question 266145: how do you find the perimeter of a quadratic equation with the points given?
(1,-1) & (-0.25,2.125)
(-0.25,2.125)& (-2,-4)
(-2,-4) & (-1,-5)
(-1,-5) & (1,-1)

Click here to see answer by Alan3354(30965)

Question 266185: t(3t-120)=-12
Click here to see answer by stanbon(57223)

Question 266186: Solve the equation x^4+16x^2+63=0
Click here to see answer by checkley77(12569)

Question 266397: Hi, Can someone please give me a hand witht this one?
b^2+2b-24=0
Thanks
Click here to see answer by Alan3354(30965)

Question 266349: Another method of solving quadratic eqautions came from India.
a. move the constant term to the right side of the equation.
b. multiply each term in the equation by four times the coefficient of the x square term.
c. Square the coefficient of the orginal x term and add it to both sides.
e. sel the left side of the equation equal to the postive square root of the number on the right side and solve for x.
f. set the left side of the equation equal to the negative square root of the number on the right side of the equation and solve for x.
Solve the following.
x square - 2x -13=0
4x square - 4x + 3 = 0
x square + 12x-64=0
2x square - 3x - 5=0
I need help with any or all of the following to see an example of the process.

Click here to see answer by user_dude2008(1861)

Question 266445: Find the value or values of y in the quadratic equation y^2+4y+4=7
Click here to see answer by jim_thompson5910(28476)

Question 266474: Use the quadratic formula to solve the equation; 2x^2-x=-7
Click here to see answer by JBarnum(2044)

Question 266543: If given a picture of the graph, the vertex of (-1, 5) and another set of points, (2, -13), how do you write the equation in vertex form, f(x) = a(x-h)^2 +k? I know part of the equation is f)x) = a(x+1)^2 +5, but how do I find the "a".
Click here to see answer by drk(1908)

Question 266679: state the value of the discriminant and number of real solution s^+3s+3=0 and one last? the cost of maufactor amolded part is related to the quanity produced during a production run. when 100 parts are produced, the cost is 300. when 500 parts are produced, the cost is 1900 dollars wat is the averae cost per part.
Click here to see answer by drk(1908)

Question 266719: Find the vertex, the line of symmetry and the maximum or minimum value of f(x). Graph the function.
f(x)=1/5(x+2)^2+8
Click here to see answer by stanbon(57223)

Question 266797: the larger of two negative numbers is five more than the smaller. if the square of the larger number is increased by 27, the result is the smaller number multiplied by-7. find the numbers
Click here to see answer by drk(1908)

Question 266866: 25x^2+25=0
Click here to see answer by dabanfield(803)

Question 266884: Hi I need help on understanding this problem:
give exact and approximate solutions.
(x-5)^2=18
Click here to see answer by stanbon(57223)

Question 266899: what are the zeroes of 5x^2-13x=-6
Click here to see answer by JBarnum(2044)

Question 266938: z^2 + 12z + 15
Click here to see answer by JBarnum(2044)

Question 266930: Translate the problem into a pair of linear equations in two variables. Solve using elimination or substitution.
Joe has a collection of nickels and dimes that is worth $5.65 . If the number of dimes was doubled and the number of nickels was increased by 2, then the value of the coins would be $10.15 . How many dimes does he have?
Click here to see answer by JBarnum(2044)

Question 267031: Find the 1st 5 values of the recursive function, then find their 1st and 2nd differences, then state wheather the recursive function has a linear model, quadratic model or neither. f(0)=-2, f(n)=f(n-1)+2n
Click here to see answer by drk(1908)

Question 267042: Packaging. A candy box is to be made out of a piece of cardboard that measures 8 by 12 inches. Equal-sized squares x inches on a side will be cut out of each corner, and then the ends and sides will be folded up to form a rectangular box.
A) Express the volume of the box V(x) in terms of x.
B) What is the domain of the function V ( determined by the physical restrictions)?
C) Complete table
Volume
X V (x)
1
2
3
D) Plot the points in part (C) and sketch a graph of the volume function through these points. (c) a graphing utility can be used as an aid.
Click here to see answer by drk(1908)

Question 266830: the perimetere of a rectangle is 20 in and the area is 16sq in. find the diminsions
Click here to see answer by ankor@dixie-net.com(15624)

Question 267146: what is the greatesr common factor of 10x^3-45x^2+20x
Click here to see answer by jim_thompson5910(28476)

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