Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 448426: This problem is a porabola equation. i really need help.
The question is, : (A.) tell whether the graph opens up or down. (b) find the coordinatnts of the vertex. (c) Write an eqquation of the axis of symmetry.(D) Find the roots of the equation. and graph the function. The equation is: 2x^2-4x-16=y
Click here to see answer by ewatrrr(10682)

Question 447781: how would i find the maximun height of an arch with an equation such as h=-0.00635x^2+4.0005x-0.07875
Click here to see answer by ewatrrr(10682)

Question 448196: Which is not a factor of 12x3 – 82x2 – 14x?
(3x – 2)
(6x + 1)
(x – 7)
2x

Click here to see answer by ewatrrr(10682)

Question 448597: I dont Understand How to do this equation:
3n^2=10n
Click here to see answer by jorel1380(2518)

Question 448577: Write a quadratic equation in standard form that has the solutions 1 and -8
Click here to see answer by ewatrrr(10682)

Question 448580: If the discriminant of a quadratic is 7 describe how many and what type of solutions the equation has
Click here to see answer by Alan3354(30993)

Question 448665: 1. A rectangular table is three times as long as its width. If the area is 147ft^2, find the length and width of the table:

2. The product of the page numbers on two facing pages of a book is 132, find the page numbers.

Click here to see answer by emargo19(101)

Question 448678: The length of the table top is 5m greater than the width. The area is 66m2. Find the Dimensions of the table top
Click here to see answer by chriswen(106)

Question 448887: The path traveled by a ball hit into the air can be modeled with the quadratic function, y = -0.042x^+5x, where x is the distance in yards from the point it was hit and y is the height the ball reached in feet. Assuming that the ground is level.
a) Find the maximum height reached by the ball.
b) How far from where it was hit does the ball hit the ground?
Please help me with this problem as I am getting a negative figure for the height. There is something I am not doing correct.
Thank you. I look forward for your assistance with this problem.
Click here to see answer by htmentor(789)

Question 448999: Given 3 points
f(3)= -11
f(1)= -3
f(-2)= -21
FIND THE QUADRATIC FUNCTION(AX^2*BX+C=0)
Click here to see answer by ewatrrr(10682)

Question 449096: I have a word problem that I cannot get into the right form. If I can get it into the right form I can solve the problem. The problem is "Lisa participated in a triathlon in which she swam 3 miles, ran 5 miles, and then bicycles 10 miles. Lisa ran twice as fast as she swam, and she cycled three times as fast as she swam. If her total time for the triathlon was 1 hour and 46 minutes, then how fast did she swim?"
Can you help me to understand how to right the problem into an equation to find the answer?
Click here to see answer by rwm(914)

Question 449127: 3x^2+11x+10=0
please this one fast
Click here to see answer by Alan3354(30993)

Question 449150: How do you find the x-intercepts and the vertex of the graph of the function? Could you also graph the vertex if possible, thank you!
y=x(x+2)
Click here to see answer by ewatrrr(10682)

Question 449355: Can you help me use the zero property or factoring to find the solution of (x+2)(2x+7)=-15 ?
Click here to see answer by MathLover1(6638)

Question 449352: i need help on getting the answer for this problem "5x^2+5=-13x", help?
Click here to see answer by jim_thompson5910(28598)

Question 449352: i need help on getting the answer for this problem "5x^2+5=-13x", help?
Click here to see answer by MathLover1(6638)

Question 449377: X^2=-14x-40 Help pleasee what do i do when the x squared is in the other side?????ASAAPP!
Click here to see answer by Alan3354(30993)

Question 449377: X^2=-14x-40 Help pleasee what do i do when the x squared is in the other side?????ASAAPP!
Click here to see answer by Math_Teacher_37(4)

Question 449383: Hey, Im in much need of help to figure out how to factor/solve qudaratic equations that are not in X^2+bx+c=0 form. for example,how do you factor 4x^2=4x+5?
Click here to see answer by MathLover1(6638)

Question 449460: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
2x^2=-2x+7
x = ?
x = ?
Please show me the steps to get the steps.
Click here to see answer by jorel1380(2518)

Question 449454: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
(x-2)(x+1)=8
x = ?
x = ?
Please show me the steps to get the steps.
Click here to see answer by jorel1380(2518)

Question 449466: Solve the following equation by first multiplying both sides by the LCD and then applying the quadratic formula to the result. (Enter solutions from smallest to largest.)
1/2x^2-1/2x-15/32=0
x = ?
x = ?
Please show me the steps to get the steps.
Click here to see answer by mananth(12270)

Question 449465: Solve the equation 25x2 - 64 = 0 using the quadratic formula. (Notice b = 0. Enter solutions from smallest to largest.)
x = ?
x = ?
Please show me the steps to get the steps.
Click here to see answer by mananth(12270)

Question 449457: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
(2x-1)(x+2)=9
x = ?
x = ?
Please show me the steps to get the steps.
Click here to see answer by mananth(12270)

Question 449464: To apply the quadratic formula to the equation 4x2 - 7x = 0, you have to notice that c = 0. Solve the equation using the quadratic formula. (Enter solutions from smallest to largest.)
x = ?
x = ?
Please show me the steps to get the steps.
Click here to see answer by jorel1380(2518)

Question 449458: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
2x^2-5x=7
x = ?
x = ?
Please show me the steps to get the steps.
Click here to see answer by aagam94(6)

Question 449462: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
6x^2-1=2x
x = ?
x = ?
Please show me the steps to get the steps.
Click here to see answer by aagam94(6)

Question 449461: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
3x^2=-4x+2
x = ?
x = ?
Please show me the steps to get the steps.
Click here to see answer by mananth(12270)

Question 449451: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
24x^2-x-3=0
x = ?
x = ?
Please show me the steps to get the steps.
Click here to see answer by mananth(12270)

Question 449447: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
9x^2+18x+2=0
x=?
x=?
Please show me the steps to get the answer.
Click here to see answer by mananth(12270)

Question 449446: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
x^2+12x+34=0
x=?
x=?
Please show me the steps to get the answer.
Click here to see answer by mananth(12270)

Question 449463: Solve the equation 7y3 - 14y2 + 6y = 0 by first factoring out the common factor y and then using the quadratic formula. (Enter solutions from smallest to largest. If there are any unused answer boxes, enter NONE in the last boxes.)
y = ?
y = ?
y = ?
Please show me the steps to get the steps.
Click here to see answer by mananth(12270)

Question 449496: hi i am trying to work out x^2-18=0 and cant seem to work out the right answer i came to (x+9)(x-2)=9,-2
please help
regards
jordan
Click here to see answer by mananth(12270)

Question 449500: Compute the discriminant of the quadratic equation 2x^2-3x – 5 = 0 and then
write a brief sentence describing the number and type of solutions for the
equation.
Click here to see answer by scott8148(6628)

Question 449819: The length of a rectangular gym is 8 meters less than 3 times it's width. Find the dimensions is the area of the gym is 336 square meters.

^^ I do not understand how to set up the equation.
Click here to see answer by mananth(12270)

Question 449965: There is a number between 10 and 100: when multiplied by the digit on the left the product is 280: if the sum of the digits be multiplied by the same digit the product is 55: find the number.
Click here to see answer by sudhanshu_kmr(1152)

Question 449986: write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2 + bx + c = 0. The solutions are -10, 7
Click here to see answer by rwm(914)

Question 450003: The number of tickets sold each day for an upcoming performance of Handel's Messiah is given by N(x) = -0.3x^2 + 7.8x + 14, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?

Click here to see answer by nerdybill(6963)

Question 450007: Factor the expressions completely.
x^2-9
x^2+6x+9
5x^2+16x+3
Click here to see answer by ewatrrr(10682)

Question 450008: Use the zero-product property to solve the equation.
(2x+1)^2=0
Click here to see answer by richard1234(5390)

Question 450005: Factor the expressions.
x^2+x-12
x^2+11x+30
x^2+3x+2
Click here to see answer by ewatrrr(10682)

Question 449918: What is the equation of the 3 given points, (1,3), (1,-1), (2,7)?
Click here to see answer by richard1234(5390)

Question 449992: The number of tickets sold each day for an upcoming performance of Handel's Messiah is given by
Click here to see answer by rwm(914)

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