Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 270397: How can I write the general form of an equation of the line that passes through two points? (1,4) (5,6). Thank you!
Click here to see answer by checkley77(12844)

Question 270400: Please help me figure out how to change quadratic equations from standard form to vertex form!

Thank you!
Click here to see answer by solver91311(24713)

Question 270407: one leg of a right triangle exceeds the other leg by four inches. the hypotenuse is 10 inches. find the length of the shorter leg of the right triangle .
Click here to see answer by Greenfinch(383)

Question 270701: Find all real solutions to each equation:
64. x^2+x+√(x^2+x)-2=0
Would you square all terms to get rid of the sq root over the (x^2+x) first and then solve for x with a 4th power coeffcient? Thanks for your help!
Click here to see answer by stanbon(75887)

Question 270745: What is the number of x- and y-intercepts that quadratic functions may have?
Click here to see answer by solver91311(24713)

Question 270847: I am not sure of how to calculate thw right answer for these two equations/
1) S = -10(2)^2+21(2)+7.
2) S = -10(4)^2+21(4)+7.
Click here to see answer by JBarnum(2146)

Question 270845: ichael discovers that the front car of a vintage roler caoster is a rectangular solid whose height is two feet shorter then its width and whose lenght is twice the width. the car has a volume of 150 cubic feet.
a) write an expression for the car's volume
b) write an equation showing that the car's volume is equal to 150. Rewrite this equation so thatone side is equal to 0.
Click here to see answer by Stitch(470)

Question 270881: How can I solve this kind of equation? Do I solve for t?
"Find the real solutions of each equation."
(Square Root of)5t + 3 (/Square Root) = -2
Click here to see answer by JBarnum(2146)

Question 270887: Which of these quadratic functions has the widest graph?
A.y=1/4x to the second power
B.y=1/2x to the second power
C.y=-x to the second power
D.y=4x to the second power
Click here to see answer by Alan3354(69443)

Question 271022: discriminant of each equation and tell if the solutions are real or imaginary for example how would you do y=x^2+10X-25 also tell how many solutions
Click here to see answer by drk(1908)

Question 271137: How do you solve this quadratic equation???
x squared -17x-9=0
Click here to see answer by Greenfinch(383)

Question 271137: How do you solve this quadratic equation???
x squared -17x-9=0
Click here to see answer by Theo(13342)

Question 271244: Solve graphically. Round solutions to three decimal places, where approporiate.
4x^2-2=3x
Click here to see answer by stanbon(75887)

Question 270643: If you are looking at a graph of a quadratic equation, explain how you determine where the solutions are found?
Click here to see answer by Zyzden(7)

Question 271343: multiply
(b+1/3)(b+1/3)
Click here to see answer by checkley77(12844)

Question 271343: multiply
(b+1/3)(b+1/3)
Click here to see answer by JBarnum(2146)

Question 271355: solve
8/z=9/z-1/z
Click here to see answer by Alan3354(69443)

Question 271355: solve
8/z=9/z-1/z
Click here to see answer by JBarnum(2146)

Question 271342: convert to a decimal
8.66x10^7
Click here to see answer by JBarnum(2146)

Question 271393: how do i do this?? Help please I dont understand! m(2m-16)=12
Click here to see answer by Zyzden(7)

Question 271393: how do i do this?? Help please I dont understand! m(2m-16)=12
Click here to see answer by checkley77(12844)

Question 271454: The equation is (2y + 1/2)^2 = 4/25. I divided the first half of the equation by 2 to get the variable alone, so my new equation is (y + 1/4)^2 = 4/25. I squared both sides, ending up with y + 1/4 = 2/5. My final answers were 13/20 and -3/20, not the answers in the book. Please help me find my error. Thank you!!
Click here to see answer by scott8148(6628)

Question 270067: Combine like terms where possible. 8y^4 - 3y^4
Click here to see answer by Alan3354(69443)

Question 271528: please help me solve for X
2X-2 + 1/5X + 4 = 90
Click here to see answer by andriana121(7)

Question 271639: Jack usually mows his lawn in 3 hours. Marilyn can mow the same lawn in 5 hours. How much time would it take for them to mow the lawn together?
Click here to see answer by mananth(16946)

Question 271677: Find all numbers for which the rational expression is undefined:
s^3-9s/s^2-4
Please explain the answer.
PLEASE HELP!!!
Click here to see answer by nerdybill(7384)

Question 271674: Find the following. Assume that variables can represent any real number.
sqrt:(a+2)^2=???
PLEASE HELP!!!!!
Click here to see answer by checkley77(12844)

Question 271699: Area of a painting. A rectangular painting with a width of x centimeters has an area of x^2 +50x square centimeters. Find a binomial that represents the length.
Click here to see answer by richwmiller(17219)

Question 271673: If a pro basketball player has a vertical leap of about 30 inches, what is his hang time? Use the hang-time function V=48T^2
PLEASE HELPPPP!!!!
Click here to see answer by Theo(13342)

Question 271680: If the sides of a square are lengthened by 6cm, the area becomes 144cm^2. Find the length of a side of the original square.
Please explain answer. Thanks!
Click here to see answer by ankor@dixie-net.com(22740)

Question 271920: Write a quadratic equation in the variable X having the given numbers as solutions. Type the equation in standard form of ax^2+bx+c=0.
Solution: 1, only solution
The equation is _____________ =0
Thanks so much for your help :-)
Click here to see answer by jsmallt9(3758)

Question 271852: A machine produces 30 articles in t hours. If the machine were to produce 5 more articles each hour, it would take half an hour less to produce 30 articles. Find t.
Click here to see answer by jsmallt9(3758)

Question 271959: A ball is dropped from a height of 64 feet. Its height above the earth in feet is given by h(t)=-16t^2+64, where t is the number of seconds after it is dropped.
Find h(1).
How long does it take the ball to fall to the earth?
Click here to see answer by stanbon(75887)

Question 271963: find the value of x
4xx+12x+9
Click here to see answer by palanisamy(496)

Question 271628: How do you find the standard form, vertex, line of symmetry, and maximum or minimum values, and square the equation?
f(x)=x^2-2x-3
Click here to see answer by ankor@dixie-net.com(22740)

Question 271980: Use the graph of y = x2 � 6x to answer the following: I am not able to put the graph

a) Without solving the equation (or factoring), determine the solutions to the equation x2 � 6x = 0 using only the graph.

Answer: X=0,60 and Y=30,-90
Explain how you obtain your answer(s) by looking at the graph:
I picked the points on the graph
b) Does this function have a maximum or a minimum?
Answer:
Explain how you obtain your answer by looking at the graph:

c) What is the equation of the line (axis) of symmetry for this graph?
Answer:

d) What are the coordinates of the vertex in (x, y) form?
Answer:

Click here to see answer by Earlsdon(6294)

Question 272122: State whether the given equation represents a linear, quadratic, or exponential function. Tell how you decided.
y = -8x2 + 4

Click here to see answer by palanisamy(496)

Question 272121: Evaluate and tabulate the values of y for the value(s) given.
y = 2x3, for x = -3, 0, 1, 4

Click here to see answer by palanisamy(496)

Question 271999: Find the possible values of r in this equation
r^2 -7r -8=0
Click here to see answer by jsmallt9(3758)

Question 271993: Find the value of y in the quadratic equation
y^2 +4y +4 =7
Click here to see answer by jsmallt9(3758)

Question 271340: solve
(x+11)(x-18)(x+8)>0
Click here to see answer by jsmallt9(3758)

Question 272154: Okay so I'm learning about rational functions in my 9th grade algebra class. I'm having trouble graphing y=4(1/x) from the y=x form, no it is not a parabola.
I know that 4 is the vertical stretch, but I don't know where to start to begin graphing it.
How do you vertically graph y=4(1/x)?
Click here to see answer by richwmiller(17219)

Question 272157: subtract and simplify
5xsqrt18-6xsqrt2
Click here to see answer by oberobic(2304)

Question 272371: How can i solve x^2-18x-40=0 by factoring?
Click here to see answer by Alan3354(69443)

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, 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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