Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 737704: have you heard this type of question
that 21 is divided into 3 equal parts and the sum of their product is ........?
divide it into three equal parts
Click here to see answer by josgarithmetic(39617)

Question 737755: Please find the solution(s): 2x^2 -32 = 0
And show work please
Thank you
Click here to see answer by MathLover1(20849)

Question 737763: What is the Y coordinate of the vertex for the quadratic: y = x^2 -8x -9
Please show your work
Thank you
Click here to see answer by Susan-math(40)

Question 737763: What is the Y coordinate of the vertex for the quadratic: y = x^2 -8x -9
Please show your work
Thank you
Click here to see answer by MathLover1(20849)

Question 737760: What is the X coordinate of the vertex for the quadratic: y = x^2 -8x -9
Thank you for your time
Click here to see answer by Susan-math(40)

Question 737825: x2 -4x-32

Click here to see answer by Bb(20)

Question 737870: Factor the following perfect square trinomial.
64z^2+16z+1
I always have problems with me, can someone please explain. Thank you!
Click here to see answer by Alan3354(69443)

Question 737870: Factor the following perfect square trinomial.
64z^2+16z+1
I always have problems with me, can someone please explain. Thank you!
Click here to see answer by Chelzhampton (1)

Question 738026: Solve for x:
(2x − 5)(3x + 6) = 0
I have to figure out this problem, but I'm not too sure how to solve these.Could you please show me the steps in order to solve this problem? Thank you!
Click here to see answer by MathLover1(20849)

Question 738058: Can a rectangular piece of wrapping paper with an area of 81 square inches have a perimeter of 60 inches? HINT: Let length= 30-w. Explain please.
Click here to see answer by Alan3354(69443)

Question 738044: Hi,
I've already done a few of these problems in the past, but this time I was confused on one of the steps.The question is "True or false? 2r3 + 3r2 − 18r − 27 = 0 has solutions 3, -3, and 3/2."
So far, I have (2*3)squared, plus 3r squared, minus 18*3/2. I don't know how to simplify the 3r squared part though. Could you help?Thanks(:
Click here to see answer by Alan3354(69443)

Question 738105: Shirley bougth 4 jackets for $ 90.30 if each jacket cost $21 before tax was added what tax rate did she pay
Click here to see answer by DrBeeee(684)

Question 738152: Hi, I needed help on this question...I don't know how to do it.
Find the solutions:
2x to the 4th + 8x to the 3rd = 0
Click here to see answer by richwmiller(17219)

Question 738152: Hi, I needed help on this question...I don't know how to do it.
Find the solutions:
2x to the 4th + 8x to the 3rd = 0
Click here to see answer by DrBeeee(684)

Question 738364: 4x^2=100
Click here to see answer by jim_thompson5910(35256)

Question 738560: 4p^2-3=7
Click here to see answer by MathLover1(20849)

Question 738692: Use the quadratic formula to find both solutions to the quadratic equation 3x^2-x+4=0
Click here to see answer by MathLover1(20849)

Question 738744: 7x+9=30
Click here to see answer by Angel22191(1)

Question 738839: x^2+10x=15 how do i complete the square?
Click here to see answer by Alan3354(69443)

Question 739230: How do I solve 7 to the eighth power times 7 to negative power one times 7 to the power of negative five? I don't understand the steps to multiplying exponents
Click here to see answer by josgarithmetic(39617)

Question 739246: How to solve linear equations and equalities you have a total of $5.00 to spend the gallon of milk is $3.00 the price of each orange is 0.10, I brought 20 oranges which the total is $2.00.
Click here to see answer by richwmiller(17219)

Question 739236: Please explain the steps to simplify a quadratic expression and the steps to solve a quadratic equation.
Thank you.
Click here to see answer by richwmiller(17219)

Question 739392: Sam is going to tile his bathroom with 1/4 foot tiles by 1/4 tiles. The function rule for the 1/4 by 1/4 tiles is y=16x^2. If the bathroom floor's dimensions are 12 feet by 12 feet. How many tiles would he need to tile the bathroom floor?
Click here to see answer by josmiceli(19441)

Question 739940: Two companies working together can clear a parcel of land in 9 hours. Working alone it would take Company A 7 hours longer to clear the land than it would Company B. How long would it take Company B to clear the parcel of land alone?
Click here to see answer by lwsshak3(11628)

Question 739969: A plane travels at a speed of 205 mph in still air. Flying with a tailwind, the plane is clocked over a distance of 800 miles. Flying against a headwind, it takes 1 hour more time to complete the return trip. What was the wind velocity?
Click here to see answer by mananth(16946)

Question 740449: 12. Four research participants take a test of manual dexterity (high scores mean better dexterity)
and an anxiety test (high scores mean more anxiety). The scores are as follows.
Person Dexterity Anxiety
1 1 10
2 1 8
3 2 4
4 4 -2
For problems 12 to 14, do the following: (a) Make a scatter diagram of the
scores; (b) describe in words the general pattern of correlation, if any; (c) figure
the correlation coefficient; (d) figure whether the correlation is statistically significant
(use the .05 significance level, two-tailed); (e) explain the logic of what
you have done, writing as if you are speaking to someone who has never heard
of correlation (but who does understand the mean, deviation scores, and hypothesis
testing); and (f) give three logically possible directions of causality, indicating
for each direction whether it is a reasonable explanation for the correlation
in light of the variables involved (and why).

Click here to see answer by lynnlo(4176)

Question 740769: Find the vertex, x- intercepts, and y- intercept of f(x)=x^2-6x+4?
Click here to see answer by Menjax(62)

Question 740734: -4x = -2x2 + 30

Click here to see answer by lenny460(1073)

Question 741039: solve the equation by factoring. z^2-10z+9=0

Click here to see answer by stanbon(75887)

Question 740997: how do I solve this word problem
"a rectangular rug has area of 96 square feet. If its leng is 4 feet more than twice its with. find the dimension of the rug. has to use algebratic equatio"
I first tried writing out the problem as this
L=4+2w but that is as far as I knew how to get.
Click here to see answer by rothauserc(4718)

Question 741096: a floor can be covered with 1,728 small square tiles. if tiles 2 inches longer on each side are used, the floor can be covered with 432 tiles. find the length of each side of the smaller tile.
Click here to see answer by josgarithmetic(39617)

Question 741150: i need help with this problem
a dog trainer has 80 ft of fencing that will be used to create a rectangular work area for dogs . if the trainer wants to enclose an area of 300 ft what will be the dimensions of the work area
Click here to see answer by stanbon(75887)

Question 741500: Solve the quadratic equation by factoring and applying the zero product principle. (Enter your answers as a comma-separated list.)
(x − 5)2 − 16 = 0

Click here to see answer by richwmiller(17219)

Question 741591: (-x^2+x+2)+(3x^2+4x+5)
Click here to see answer by stanbon(75887)

Question 741776: solve the quadratic equation using square roots. 25x^2-2=2.
Click here to see answer by lynnlo(4176)

Question 742145: |2-4i|
(3+3*i)*(2-2*i)
(7+3*i)+(-49-6*i)
x^2-3x-10<0
2x2+5x-3> 0
Click here to see answer by lynnlo(4176)

Question 742318: writing quadratic equations having the given solutions: 6i, -6i
Click here to see answer by mananth(16946)

Question 742339: Solve the equation by completing the square. 4x square minus 17x plus 24=0
Click here to see answer by mananth(16946)

Question 742459: Use the quadratic formula. 9x^2-12x+4=0
Click here to see answer by Alan3354(69443)

Question 742508: Parabola. Give domain, range, vertex, and axis.
y=2x^2+8x
Please show the graph of this equation.
Click here to see answer by lwsshak3(11628)

Question 742457: Use the quadratic formula. 1/2x^2+2x-7=0
Click here to see answer by checkley79(3341)

Question 743194: the sum of an integer squared and four times the integer is 45 find the integers
Click here to see answer by tommyt3rd(5050)

Question 743273: Find all solutions of the equation. Check your solutions in the original equation. (Enter your answers as a comma-separated list.)
x4 − 8x2 + 7 = 0
Click here to see answer by lwsshak3(11628)

Question 743096: Dianna runs a race of 2 miles in 8 minutes at a steady speed. Each mile she runs beyond 2 miles, her speed slows 1 mile a minute. How long would it take her to run 5 miles?
Click here to see answer by ankor@dixie-net.com(22740)

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