Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 335604: Determine the equation of the axis of symmetry.
y = -5x2 - x + 9
what is the answer to this ? ive tried multiple times and im almost out of timeeeee ?
Click here to see answer by Fombitz(32388)

Question 335359: sloving quadratic equation x^2-5x+6=0
Click here to see answer by Fombitz(32388)

Question 335690: I am looking at an example of a quadratic equation x^2 - 4x - 7 =0
using the quadratic formula I come up with 4 (+or-)(-4^2-4(1)(-7))/2 the instructor simplified this to x = 4(+or-)2(11^1/2) I don't see where the number 11 came from or how the 2 was pulled out of the square can someone explain. I will have a similar question to this according to the teacher in a quiz next week and I need to understand this. Thank-you.
Click here to see answer by Fombitz(32388)

Question 335708: 〖(x-5)〗^2=16
Click here to see answer by Fombitz(32388)

Question 335716: Determine the nature of the solution of the equation. x^2+6=0
A) 2 real solutions
B) 2 imaginary solutions
C) 1 real solution
Click here to see answer by Fombitz(32388)

Question 334932: 4(x-2)^2=9
Click here to see answer by Fombitz(32388)

Question 335714: Determine the nature of the solution of the equation. 7t^2-8t=0
A) 2 real solutions
B) 2 imaginary solutions
C) 1 real solution
Click here to see answer by solver91311(24713)

Question 335768: solve

I could use some help with this problem please.
Thank you...
Click here to see answer by stanbon(75887)

Question 335769: solve

please help...
Thank you...
Click here to see answer by Earlsdon(6294)

Question 335770: I am having trouble understanding this question could someone please help me?
QUESTION: Is it possible for the graph of a quadratic function to have only one x-intercept, if the vertex is off the x-axis? Why or why not?
thank you
Click here to see answer by Fombitz(32388)

Question 335742: y2 + 3y � 18
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Question 335746: 3/2x+1/4(x-2)=10
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Question 335761: 5x(x − 1) −7 = 4x(x − 2)
Click here to see answer by Fombitz(32388)

Question 335717: The number of tickets sold each day for an up coming performance of Handel's Messiah is given by N(x)=-0.4x^2+8.8x+12, where x is the number of days since the concert was 1st announced. When will the daily tickets sales peak and how many tickets will be sold that day?
Click here to see answer by jsmallt9(3758)

Question 335917: How do I find the vertex and y-intercept of
y = x� + 8x + 11,
and how do I write it in standard form?

Click here to see answer by Edwin McCravy(20054)

Question 335940: solve by applying the quadratic formula; all radicals should be simplified as far as possible. show your work.

I could use some help with this problem please.

Thank you
Click here to see answer by jim_thompson5910(35256)

Question 335943: use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to graph the function. Show your work;

could someone please help me with this problem.
thank you

Click here to see answer by jim_thompson5910(35256)

Question 335966: solve

could someone please help me with this problem?
Click here to see answer by jim_thompson5910(35256)

Question 335894: How do I solve the following equation by the square root method?
(3y+6)^2=36
Click here to see answer by checkley77(12844)

Question 336007: QUESTION:
a ball is throw downward from a window in a tall building. the distance traveled by the ball in t seconds is ,where s is in feet. how long (to the nearest tenth) will it take the ball to fall 97 feet? show your work.
I could really use some help with this problem
Thank you
Click here to see answer by Alan3354(69443)

Question 336056: write a quadrtic equation having the given numbers as solutions
7,-4
Click here to see answer by mananth(16946)

Question 336170: Solve the equation 2x + 5 = -1/x
Click here to see answer by jim_thompson5910(35256)

Question 336173: x^2=20+8x
6x^2=5x+6
x^2+7=18

Click here to see answer by jim_thompson5910(35256)

Question 336178: x^2+7x=18
Click here to see answer by jim_thompson5910(35256)

Question 336187: x(x+5)=14
Click here to see answer by jim_thompson5910(35256)

Question 336202: (x-5)^2=16
Click here to see answer by jim_thompson5910(35256)

Question 336266: Please help solve
√7:(y^7)
Click here to see answer by jim_thompson5910(35256)

Question 336283: 7x^2-2=0 using quadratic formula. I am confused because there is no b
Click here to see answer by kshlak(4)

Question 336283: 7x^2-2=0 using quadratic formula. I am confused because there is no b
Click here to see answer by jim_thompson5910(35256)

Question 336365: solve 2x^2-2x-1=0 by any method.
Click here to see answer by jim_thompson5910(35256)

Question 336508: what is the axis of symmetry of f(x)=x2-7x-60
Click here to see answer by edjones(8007)

Question 336517: Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions.
5 - 3z2 = 6z
HELP PLEASE
Click here to see answer by edjones(8007)

Question 336529: solve the following equations for x.
A)
(x)(x)/(0.500-x) = 8.30
B)
2.94=(2.00 x)2/(0.200-x)
C)
x2/0.20+x)(0.030+x) = 2.00
D)
4.00x2/(0.100-x)(0.200-x) = 1.45
Click here to see answer by edjones(8007)

Question 336596: how do i solve the quadratic expression 7n squared + 9n+ 2
Click here to see answer by mananth(16946)

Question 336512: How long would it take for a ball dropped from a 400 ft building to hit the ground?
Click here to see answer by Fombitz(32388)

Question 336556: help solving xsquared - 16x + 32=0 using quadratic formula
Click here to see answer by Fombitz(32388)

Question 336636: p^2+13p-30=0
Click here to see answer by edjones(8007)

Question 336631: x^2 - 3x + 4 = 0
Click here to see answer by jim_thompson5910(35256)

Question 336644: how do you solve the quadratic equation x squared -9x-10=0 by factoring
Click here to see answer by user_dude2008(1862)

Question 336679: 4xsquared -9=0
Click here to see answer by user_dude2008(1862)

Question 336726: How can I solve 4x^2 + 48x +104 = 0 by applying the quadratic formula?
Click here to see answer by Edwin McCravy(20054)

Question 336738: x^2+6x+160
Click here to see answer by jim_thompson5910(35256)

Question 336832: For the following eqaution, state the value of the discriminant and then describe the nature of the solutions. -8x^2-10x+2=0
Click here to see answer by jim_thompson5910(35256)

Question 337017: Use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to graph the function.
f(x) = -2x^2 + 2x - 9
Click here to see answer by mananth(16946)

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, 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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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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, 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