Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 242420: What is the number of solutions for the quadratic function f(x) = 3x^2 + 5x + 10
Click here to see answer by checkley77(12844)

Question 242580: write 7x^2+5=x^2-8x in STANDARD form and find the value of b.
Click here to see answer by stanbon(75887)

Question 242588: If you can find this you must be a genius! I've been working on this for half an hour... I would greatly appreciate it!
y=6x^2-9x-13
What is the larger intercept? What is the smaller intercept?
Click here to see answer by Theo(13342)

Question 242616: i just need this factored 30000r(squared)-2225r-14=0. just need it factored i can take it from there.
Click here to see answer by Theo(13342)

Question 242616: i just need this factored 30000r(squared)-2225r-14=0. just need it factored i can take it from there.
Click here to see answer by jsmallt9(3758)

Question 242618: 16. Find the value of n such that x2 + 2x + n is a perfect square trinomial.
4
�1
1
2
Click here to see answer by Theo(13342)

Question 242617: 16. Find the value of n such that x2 + 2x + n is a perfect square trinomial.
4
�1
1
2
Click here to see answer by rapaljer(4671)

Question 242693: 8 multiplied by 10^6
Click here to see answer by Alan3354(69443)

Question 242692: 9.3 multiplied by 10^-5
Click here to see answer by solver91311(24713)

Question 242690: (4/3)^-2
Click here to see answer by unlockmath(1688)

Question 242689: w^-4/w^6
This is a / fraction
Click here to see answer by unlockmath(1688)

Question 242738: 3x^2+14x-24=0
Click here to see answer by jim_thompson5910(35256)

Question 242799: solve the equation
(3m-6)^2 + 3(3m-6)-10=0
Thank you
Click here to see answer by jim_thompson5910(35256)

Question 242856: all rectangles have a perimeter of 138, find dimensions of the one whose area is largest
Click here to see answer by rapaljer(4671)

Question 242886: What is the parent function of a quadratic equation?
Click here to see answer by stanbon(75887)

Question 242869: A rectangle has a length 2 meters less than twice its width. When 5 meters is added to the width, the result is a square with an area of 144 square meters. Find the dimensions of the original rectangle
Click here to see answer by checkley77(12844)

Question 242857: find the domain and range of each of the following functions
1.) y=x2-5x+4
2.) y= square root of 2x-2
Click here to see answer by nyc_function(2741)

Question 242592: The Gateway Arch in St. Louis, Missouri, has a shape similar to that of a parabola. The edge of the arch can be modeled by
h= -(2/319)x^2+(92/21)x-(864/7)
where x and h are measured in feet. How high is the arch? Answer in units of ft.
Thanks!
Click here to see answer by ankor@dixie-net.com(22740)

Question 242335: A rectangle has a length 2 meters less than twice its width. When 5 meters is added to the width, the result is a square with an area of 144 square meters. Find the dimensions of the original rectangle
Click here to see answer by ankor@dixie-net.com(22740)

Question 242623: A rectangle has a length 2 meters less than twice its width. When 5 meters is added to the width, the result is a square with an area of 144 square meters. Find the dimensions of the original rectangle

Click here to see answer by checkley77(12844)

Question 242900: How do you know when an equation has infinitely many solutions? How do you know when an equation has no solution?
Click here to see answer by Edwin McCravy(20055)

Question 242922: Whats is the discriminat of 8x^2-5x+3=0
Click here to see answer by JimboP1977(311)

Question 242691: (2s^-1t^3/6s^2t^-4)^-3
Click here to see answer by nyc_function(2741)

Question 242986: Explain how you would find the x-intercepts and y-intercept for quadratic
functions? Are there situations where graph of quadratic functions have
only one x-intercept? Situations where there are no x-intercepts?

Click here to see answer by stanbon(75887)

Question 242975: Given that one of the roots of the quadratic equation 4x^2-(p-2)x-2p=5 is negative of the other root,find
(a)the value of p,
(b)the roots of the quadratic equation
Click here to see answer by stanbon(75887)

Question 242538: the path of a golf ball hit at an angle of about 10 degrees to the horizontal can be modelled by the function h= -0.002dsquared + 0.4d
where h is the height of the ball, in metres, and d is the horizontal distance the ball travels, in metres, until it first hits the ground.
a. What is the maximum height reached by the ball?
b, What is the horizontal distance of the ball from the golfer when the ball reaches its maximum height?
c. What distance does the ball travel horizontally until it first hits the ground?
Click here to see answer by Alan3354(69443)

Question 243052: how do you solve -3/u+1=-8+7/u+2
Step 1: Group like terms together
-3/u-7/u = -8+2-1
Step 2: find LCF of the demoninators of the equation at the left of the equal sign. Here you will realise that U is the LCF and so factorised as
-3-7/U = -7
Step 3: Solve for U value
-10/U = -7
Mutliply both sides by U
(U)-10/U = -7(U)
The two Us at left will cancel themselves and you will have:
-10 = -7U
Divide both sides by -7:
-10/-7 = -7U/-7
At the left the negatives will cancel themselves and at the right -7 as a demoninator will cancel the numerator.
Therefore, the final answer will be:
10/7 = U or U = 1 whole number, 3 over 7 (Mixed fraction)

Click here to see answer by freekie11(2)

Question 243116: b) y = x2 � 4x + 5
Use the values of x provided in the table.

x y
0
1
2
3
4
Click here to see answer by edjones(8007)

Question 243164: find three values of k for which the expression is factorable
Click here to see answer by checkley77(12844)

Question 243190: Factor completely
175v^2+490vt+343t^2

Click here to see answer by checkley77(12844)

Question 243287: Use the quadratic formula to solve the equation. all solutions are real numbers
4x^2-4x-8=0
Click here to see answer by checkley77(12844)

Question 243287: Use the quadratic formula to solve the equation. all solutions are real numbers
4x^2-4x-8=0
Click here to see answer by College Student(505)

Question 243355: I have to solve this using the quadratic equation
3x^2+2x+5=0
Click here to see answer by checkley77(12844)

Question 243356: I have to solve using the quadratic formula
2/x + 5/x+2 = 1
Click here to see answer by edjones(8007)

Question 243356: I have to solve using the quadratic formula
2/x + 5/x+2 = 1
Click here to see answer by checkley77(12844)

Question 243530: Solve 7x^2+28x=49 by completing the square. I know you use the formula (b/2)^2 right?
Click here to see answer by jim_thompson5910(35256)

Question 243560: (5x + 3)^2 - 5 = 49
Click here to see answer by jim_thompson5910(35256)

Question 243570: (7x + 9)^2 - 7 = 43
Click here to see answer by jim_thompson5910(35256)

Question 243564: write an algebraic expression for thr given quantity. let x represent the unknown value nine times a number reduced by four.
Click here to see answer by AliciaBee(1)

Question 243590: I am struggling on a few word problems on my homework, please help me, it is due tomorrow!
You have 280 feet of fencing. Do you have enough to fence a rectangular region with an area of 4850 sq. ft. ?
and...
In 1987, your uncle opened a neighborhood grocery store. for 1987-2007 his annual sales, S(in millions of dollars) could be modeled by S= -0.035t^2 + 0.8t + 0.5 where t=0 represents 1987. During which years of operation were his annual sales 3 million dollars?
Click here to see answer by oberobic(2304)

Question 243559:
Click here to see answer by checkley77(12844)

Question 243535: Please answer this question:
You have a pool that measures 8 yards by 10 yards. You want to build a deck around all four siddes of the pool and you want to increase the total area to 120 square yards. The deck is the same width on both sides forming a perfect rectangle. What is the width of the deck?
Click here to see answer by checkley77(12844)

Question 243649: solve the equation 8x^3 + 4x^2 - 18x - 9 = 0 algebraically for all values of x?
Click here to see answer by Edwin McCravy(20055)

Question 243614: Find two positive numbers such the sum of the first and twice the second is 100 and their product is as large as possible?
Click here to see answer by Edwin McCravy(20055)

Question 243867: I am suppose to find out if this equations S= -0.0643t^2 + 3.2152t + 23.9801 is a good equation to base off a companies salary.
I figured it wasn't because it happens to be a parabole that goes down after 25 years of experience. I thought of tbe possibility of people staying at a job for 25 years is highly unlikely but possible... so I figured 18yrs + 25yrs = 43 years of age.
So I figured lowering a employees salary at the age of 44 and on was unethical.
Plus the pay rate increase beforehand was just way to fast and high...
What would you suggest would be a good solution for this company to pay salaries in a equation. It doesn't have to be a quadratic equation but I must be able to graph it.

Click here to see answer by solver91311(24713)

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, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 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