Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 518122: 8(x+2)-4x+7 what am i solving for? Can't find any examples in book.
Click here to see answer by Edwin McCravy(20054)

Question 518189: A swimming pool 6 m wide and 10 m long is to be surrounded by a cement path of uniform width. The area of the path is equal to the area of the pool. What is the width of the path?
Click here to see answer by richscary(3)

Question 518198: How do you solve: 6(x+4)^2=30?

Click here to see answer by stanbon(75887)

Question 518194: A basketball is shot with an initial vertical velocity of 24 ft/s from 6 ft. above the ground. At what time will the basketball reach its maximum height?
Click here to see answer by scott8148(6628)

Question 518209: A swimming pool 6m wide and 10m long is to be surrounded by a cement path of uniform width. The area of the walk is equal to the area of the pool. What is the width of the path?
Click here to see answer by richwmiller(17219)

Question 518331: 3x^4-31x^2+28 SOLVE
Click here to see answer by richwmiller(17219)

Question 518396: "A charter flight club charges its members $400 per year. But, for each new member in excess of 60, the charge for every member is reduced by $5. What number of members leads to a maximum revenue?"
Click here to see answer by ankor@dixie-net.com(22740)

Question 518527: For my finals I only have about 6 questions that I am stuck on. Any help is appreciated.
1) write quadratic equation in variable with a solution of 4 only.
2)Identify the degree of each term of the polynominal of -8x^3+2x^2+2x+4.
3)rewrite the expression with positive exponents (19xy)^-9/10
4)evaluate the polynomial for x=6 for 3x^2-2x+5
5) convert to decimal notation 8.87*10^7
6)find the variation constant and an equation of variation where y varies directly as x and y=90 when x=10
Thank you sooo much for any help!!!
Click here to see answer by stanbon(75887)

Question 518596: I cannot figure out how to factor this problem:
15x^2-40x-15
Thank you! :)
Click here to see answer by solver91311(24713)

Question 518785: use FOIL method to find the product (9x^2-8)(x^3-2)
Click here to see answer by josmiceli(19441)

Question 519089: for the following equation state the value of the discriminate and then describe the nature of the solutions.
9x^2+2x-8=0
what is the value of the discriminate?
which one of the statements below is correct?
A. the equation has two imaginary solutions
B. the equation has one real solution
C. the equation has two real solutions.
I think the answer to the second part is C but I do not know the first part
Click here to see answer by mamiya(56)

Question 519093: multiply
(-3m)^2(4m^2)^2
Click here to see answer by mamiya(56)

Question 519063: Define a variable and write an equation. Then solve the following problem. A number is 6 less than another number. Their sum is 86. Find the numbers.
Click here to see answer by rfer(16322)

Question 519220: what does the "bx" stand for in the equation?
Click here to see answer by umail08(87)

Question 518793: multiply and simplify
4x^2/5x^2-20x+20 * 5x-10/2x
type exponential notation with positive exponets
Click here to see answer by ankor@dixie-net.com(22740)

Question 519353: solve (x+16)(x-8)(x+10)>0
Click here to see answer by Edwin McCravy(20054)

Question 519364: jojo's java hut mixed Kona coffee beans worth$6/pound with columbian beans with $8.80/pound. the resulting mixture was 16 pounds of a delightful breakfast blend worth $6.70/pound. how many pounds of each type of bean were used?
Click here to see answer by scott8148(6628)

Question 519666: Please help me with this. The daily profit from the sale of a product is given by dollars what is the maximum profit?

Click here to see answer by nerdybill(7384)

Question 519838: please help me solve 5k^2+3k-2=0 by completing the square
Click here to see answer by oberobic(2304)

Question 519912: y^2+15y=2
Click here to see answer by mananth(16946)

Question 520027: Determine the quadratic equation whose solutions are: 3 and -2

Click here to see answer by Maths68(1474)

Question 520175: x^2-9x-36=0 solve for x
Click here to see answer by jessica43(140)

Question 520320: the mechanical power in an electric motor is given by P=T-I^2R. Find the current I(amperes) if the power P=448W, the total power T=480W, and the resistance R=2.00(Omega)
Click here to see answer by stanbon(75887)

Question 520390: A rectangular field is fenced in by using a river as one side. If 1800m of fencing are used for the 385,000m^2 field, find its dimensions.
Click here to see answer by solver91311(24713)

Question 520444: 3x�-26x+48=0

Click here to see answer by oberobic(2304)

Question 520457: -2x=-2x�+24
Click here to see answer by oberobic(2304)

Question 520392: The area of a rectangular lot 80m by 100m is to be increased by 4000m^2. The length and the width will be increased by the same amount. What are the dimensions of the larger lot?
Click here to see answer by oberobic(2304)

Question 520763: Dear Tutors,

Need the equation of the line of symmetry is?????
f(x)=2(x-2)^2
Please show work so I can learn from the example.
Thanks for all the help.
Robin
Click here to see answer by stanbon(75887)

Question 520820: 1.Given the function f(x)=1/4(x-2)^2(x+2)^2
2.Find the x and y intercept
3.Determine whether the graph crosess or touches the x axis at each intercept
4.Graph the function
Thanks in advance!
Click here to see answer by solver91311(24713)

Question 520931: (2y+3)^2-7=0 using the square root property.
Sqrt (3-x) ) -7=0
Sqrt (x+5) )= 7-x
Simplify 2 sqrt (75))- 5 sqrt (27))- sqrt (48))
Click here to see answer by edjones(8007)

Question 520973: Simplify 2 sqrt (75))- 5 sqrt (27))- sqrt (48))
Click here to see answer by lwsshak3(11628)

Question 520988: how do you solve the equation 16x squared minus 1=0
Click here to see answer by umnikmo(75)

Question 522025: solve by completing the square
m^2 � 1/2m = 7/2
Click here to see answer by mananth(16946)

Question 522256: To save materials; Choma decides to build a horse corral using the barn for one side. He has 30m of fencing materials and wants the corral to have an area of 100m^2. What are the dimensions of the corral?
Let w =width and y = length
2x+y=30
but that's as far as I know how to solve this equation
Click here to see answer by ankor@dixie-net.com(22740)

Question 522397: The ages of a man and his son add up to 39years.In 3 years the man will b 4 times as old as his son.Find the ages of the man and his son.
Click here to see answer by oberobic(2304)

Question 522396: A person jumps from a spring diving board. The trajectory of the person off the diving board is represented by the function below.
h(t) = -(x-1)^2 +4
where h is the height of the person above the water and x is the distance the person is out from the diving board.
a) graph the function over the domain 0<_ x <_ 6
b) state the height of the diving board and state why you reached your conclusion
c) determine using algebraic procedures, the greatest height reached by the person and state at what distance the person was from the end of the board when the greatest height was reached.
thanks :)
Click here to see answer by solver91311(24713)

Question 522351: How do you compose an equation from a quadratic graph? The vertex is (-1,-9) The y-intercept is -8, The x intercepts are -4 and 2, and the axis of symmetry is -3 on the x axis.
Click here to see answer by scott8148(6628)

Question 522809: Solve 2a2 + 11a− 6 = 0 using the quadratic formula
Click here to see answer by Maths68(1474)

Question 522808: Solve y2 = 15y − 56 using the quadratic formula

Click here to see answer by Maths68(1474)

Question 522840: How do you factor out the equation a^2 - 25 = 0? Help would be appreciated. Thank you.
Click here to see answer by Alan3354(69443)

Question 522843: How do you factor the equation 2a^2 + 8a = 0? Thank you.
Click here to see answer by Alan3354(69443)

Question 522843: How do you factor the equation 2a^2 + 8a = 0? Thank you.
Click here to see answer by stanbon(75887)

Question 522889: 6x-3(1-x)=12+4x
Click here to see answer by umail08(87)

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