Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 60453: 9x-5x^2=-2
2x^2-3x=x^2+18
15x^2+x=2
x^2-6x+9=-16
Click here to see answer by asha(30)

Question 60432: Find the length of the missing side of the right triangle when one side is 35ft the other is 28ft
Click here to see answer by ptaylor(2048)

Question 60474: y=x^2+x-6
It says to find the x-intercepts? I AM SO LOST! HELP!
Thank you so much!!
ac
Click here to see answer by tutorcecilia(2152)

Question 60426: Find 150% of 28
Click here to see answer by tutorcecilia(2152)

Question 60428: please help!!
A lake is 120 fathoms deep. Use the fact that there are 6 fett in a fathom to tell the depth of the lake in feet
Click here to see answer by tutorcecilia(2152)

Question 60429: Suppose y varies inversely as X and Y = 5 when x = 20. Find x when y = 2
Click here to see answer by tutorcecilia(2152)

Question 60634: please help me solve
x/2 + 5x/10 = -2
thank you so much
Click here to see answer by uma(370)

Question 60621: please help!
Solve the equation :
6x + 5 = 23
Click here to see answer by ankor@dixie-net.com(15638)

Question 60622: help would be appreciated!!
Find 12% of 3600
Click here to see answer by consc198(59)

Question 60626: PLEASE HELP I"M STUCK!!!
Write an equation of the line in slope intercept form with slope 1/3 that crosses the y axxis at (0,-2)
Click here to see answer by consc198(59)

Question 60630: Find the value of c to make g^2 - 18g + c
Click here to see answer by checkley71(8403)

Question 60718: 6x2 - 13x + 6 = 0
Click here to see answer by checkley71(8403)

Question 60718: 6x2 - 13x + 6 = 0
Click here to see answer by funmath(2925)

Question 60627: please help
FInd the product :
-5a^2(a^2-6a+7)
Click here to see answer by checkley71(8403)

Question 60729: 37. Solve the quadratic equation by factoring.
x^2-9x-4=6

Click here to see answer by GANNU0716(2)

Question 60755: I am having a REALLY hard time with this:
Complete the given table of values and graph the equation.
y=x^2-5x+4
The given table has nothing under y.
Under x looking downward is 0,1,2,3,4.
Your help would be greatly appreciated!
Thanks~
ac
Click here to see answer by Edwin McCravy(8882)

Question 60764: Solve the equation
Click here to see answer by josmiceli(9661)

Question 60768: Please help me solve!!!
to divide 7/(x+2) by (x-2)/14, you can multiply 7/x+2 by what???
Click here to see answer by Edwin McCravy(8882)

Question 60623: (8t-3)^2=0
(2x-1)^2=8
x^2-4x+4=49
Click here to see answer by checkley71(8403)

Question 60788: Can you help me find the x-intercepts??
y=x^2+6x+8 and
y=x^2-2x+4
Thanks for your help!
CH
Click here to see answer by funmath(2925)

Question 60560: 102. Time swinging. The period T (time in seconds for one complete cycle) of a simple pendulum is related to the length L (in feet) of the pendulum by the formula 8T^2 = pie ^2L. If a child is on a swing with 10 feet chain, then how long does it take to complete one cycle? my brain is dead cam some one help my brain rejuvenate :)
Click here to see answer by tutorcecilia(2152)

Question 60820: i have to find the coordinates of the vertex of y=-7xsquared+2x
Click here to see answer by funmath(2925)

Question 60819: i have to find the coordinates of the vertex of y=2x squared
Click here to see answer by funmath(2925)

Question 60815: HELP!!!! it says identify the axis of symmetry, create a suitable table of values, then sketch the graph.
y=-x^2+3x-3
I am so lost when it comes to these! Your help would be greatly appreciated!
Thanks
CH
Click here to see answer by Nate(3500)

Question 60648: Solve: 17-4x/12=5

An 80-pound grass seed mixture is 30% bluegrass seed. How many pounds of seed containing no bluegrass seed (0%) should be added to the seed mixture for a resulting blend that is 20% bluegrass seed?

Click here to see answer by ankor@dixie-net.com(15638)

Question 60864: 3x^2-6x=3
Not sure if I am doing this right, but so far I have
3x^2-6x-3=0
x^2-3x-1=0
Am I on the right track?
Can you help me with the rest?
Thanks so much!
ac
Click here to see answer by venugopalramana(3286)

Question 60863: Okay it says to solve by completeing the square.
4x^2+2x-3=0
So far I have the following:
4x^2+2x=3
x^2+2/4x=3/4
Then I get totally lost and don't know what else to do!! HELP! PLEASE!
Thanks in advance!!!!!!
CH
Click here to see answer by venugopalramana(3286)

Question 60835: Can someone please help me figure this out?

Find two consecutive positive integers such that the sum of their squares is 85.
Click here to see answer by jai_kos(139)

Question 60913: Please, please help with this question. I do not know where to go.
When a ball is thrown vertically upward, its height (h, in feet) above the ground after t seconds is described by the mathematical formula h = - 16t2 + 96t + 80. At what times is the ball 103 feet above the ground?
Click here to see answer by checkley71(8403)

Question 60937: A garden area is 30 ft long and 20ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400ft^2, what is the width of the path?
Click here to see answer by checkley71(8403)

Question 60921: i have to find the coordinates of the vertex of y=3.5x^+2x-8
Click here to see answer by pvaka(23)

Question 60919: i have to find the coordinates of the vertex of y=6x^+2x+4
Click here to see answer by pvaka(23)

Question 60920: i have to find the coordinates of the vertex of y=1/2x^+3x-7
Click here to see answer by pvaka(23)

Question 60969: Question 7) If the area of the given rectangle is 77cm2, find its length and breadth Length= x+4 Breadth= x
Click here to see answer by joyofmath(189)

Question 60425: answer
Find 12% of 3600
Click here to see answer by lags2much(2)

Question 61067: This question isn't shown in the book.
Question:
The area of a square is 32 more than the perimeter. Find the length of a side.

If you could help, I would really appreciate it.
Thank You, Amy
Click here to see answer by checkley71(8403)

Question 61072: 3x^-2-27x^-1+42=0
I need help solving for u and back substituting for x. I would appreciate your help. Thanks
Click here to see answer by Earlsdon(6287)

Question 61076: Please help. I am working on homework since 11am. I cannot get this last problem and I've tried everything I know how to do. It seems very simple but I cannot grasp it. Here goes:
Suppose that the quantity supplied S and the quantity demanded D of hot dogs at a baseball game are given by the following functions:
S(p)= -2000+3000p
D(p)= 10,000-1000p
where p is the price in dollars
a) find the equillibrium price (S=D) for hot dogs at the baseball game. what is the equillibrium quantity?
b) Determine the prices for which quantity demanded is less than quantity supplied
c) What do you think will eventually happen to the price of hot dogs if quantity demanded is less than quantity supplied- I know this answer from Economics is that the anwer is the hot dog prices will be lowered to increase denmand.
Please help me with A and B.
Clitha Mason
Click here to see answer by uma(370)

Question 61083: The question says find the x-intercepts y=4x^2+5x-6
y=4x^2+5x-6
0=4X^2+5X-6
(4x^2+-3x)+(8x+-6)
x(4x+-3)+2(4x+-3)
(x+2) (4x+-3)
Ok I can get to here but I need to solve for the X-intercepts and I'm stuck
Please help

Click here to see answer by uma(370)

Question 61109: Solve the following equations by completing the square.
x^2+8x+7=-8
2x^2=7x-15=0
u^2+10u+9=0
Solve the quadratic by using the quadratic formula.
4x^2-3x=-1

Click here to see answer by pvaka(23)

Question 60643: real or imaginary solutions to each equation
I put prens. around all that is squared, I hope this helps, I did not know anyother way to write it.
94. (sqrt 7x + 29) = x+3
Click here to see answer by tutorcecilia(2152)

Question 61146: solve for x:
x^2-10x-5=0
I did complete the square and got
x=5+/- square root of 30
did i do it correctly?
Click here to see answer by stanbon(57246)

Question 61146: solve for x:
x^2-10x-5=0
I did complete the square and got
x=5+/- square root of 30
did i do it correctly?
Click here to see answer by asha(30)

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