Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 4269: The perimeter of a rectangular floor is 42 feet, and the area is 108 square feet. Find the length of the floor.
Click here to see answer by Earlsdon(6294)

Question 4268: The perimeter of a rectangular floor is 42 feet, and the area is 108 square feet. Find the length of the floor.
Click here to see answer by Earlsdon(6294)

Question 4286: What role of operations that applies when you are solving an equation has a major exception when you are solving an inequality? Why?
Click here to see answer by rapaljer(4671)

Question 4306: Quadratic equations:
Find two possitive numbers that differ by 2 and have a producy of 20.
The answer is -1 + squareroot of 21 and 1 + squareroot of 21.
How do I at the answer. (need steps)

Click here to see answer by Earlsdon(6294)

Question 4348: solve the polynomial equation 3x cubed=6x squared by factoring
Click here to see answer by khwang(438)

Question 4347: solve the equation x cubed-3x squared-10=0
Click here to see answer by khwang(438)

Question 4357: solve the polynominal equation 2x cubed=16x squared by factoring.
Click here to see answer by rapaljer(4671)

Question 4356: solve the quadratic equation (x-3)squared=36 by the square root method.
Click here to see answer by rapaljer(4671)

Question 4350: solve the quadratic equation x squared+4x-5=0 by completing squares.

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Question 4346: solve the quadratic equation 3x squared +4x+2=0

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Question 4368: solve 6 absolute 3x+3=15

Click here to see answer by IREZ(1)

Question 4368: solve 6 absolute 3x+3=15

Click here to see answer by rapaljer(4671)

Question 4387: 3x^4=6x^2 by factoring

Click here to see answer by rapaljer(4671)

Question 4386: x^4-3x^2-10=0 solve by making the appropriate substitution.
Click here to see answer by rapaljer(4671)

Question 4385: x^4-3x^2-10=0 solve by making the appropriate substitution.
Click here to see answer by rapaljer(4671)

Question 4403: The problem is : 2 positive numbers that differ by 7 whose product is 1 I have not been able to come up with an answer.
Click here to see answer by rapaljer(4671)

Question 3607: how do you graph f(x)=-2x^2
Click here to see answer by ntnk(54)

Question 4458: ) Find all real/complex solutions for x using the Quadratic formula, and simplify the results:

x^2 + 2x + 3 = 0
Click here to see answer by Earlsdon(6294)

Question 4465: what are the x-intercepts of the equation y=2x^2+4x-3
please answer with square roots or fractions
Click here to see answer by rapaljer(4671)

Question 4240: find all of the roots of these equations:
x^3-2x^2-2x-3
x^3+x^2+x+1
x^4+3x^3+3x^2+3x+2
Click here to see answer by khwang(438)

Question 4499: How would you factor x^2 + 10x + 8. It is part of a larger problem I am having alot of trouble with
Click here to see answer by pushpaharan(47)

Question 4524: {(x+2)-y}{(X+2)+y}
is this a perfect square
Click here to see answer by pushpaharan(47)

Question 4523: (3x+7) (3x+7)
Click here to see answer by xcentaur(357)

Question 4531: what are the other ways to find for the vertex

Click here to see answer by pushpaharan(47)

Question 4464: solve for y: 24y +11 sqrt of y -18=0
Click here to see answer by pushpaharan(47)

Question 4570: Write the equation in standard form using only integers.
y = 2/3 x -4
Click here to see answer by ramanna(5)

Question 4571: Write an equation in slope-intercept form for the line.
Click here to see answer by ramanna(5)

Question 4241: find all of the roots for the equation:

Click here to see answer by khwang(438)

Question 4521: Let f(x)=x^2+x and g(x)=2x+1. Find and simplify the following:
.
a) (g o f)(x)
.
b) (f * g)(x) -- the o is colored in.
.
c) (f+g)(2)
.
d) (f-g)(3)
Click here to see answer by glitzgirl_14(11)

Question 4500: How would you factor x^2 + 10x + 8. It is part of a larger problem I am having alot of trouble with
Click here to see answer by glitzgirl_14(11)

Question 4454: Solve the following nonlinear system for x and y. Sketch a graph, showing the intersection points.
x + y = 7
and

x^2 + y^2 = 25

Click here to see answer by ichudov(507)

Question 4624: how would u add 4/x^3y + 7/xy^2?
Click here to see answer by longjonsilver(2297)

Question 4601: reduce to lowest terms:
x^2+5x+6/x^2-9
Click here to see answer by longjonsilver(2297)

Question 4628: #1: What number can be added to both the numerator and the denominator of 16/37 to produce a fraction equal to 5/8? To answer this, let x be the number in question.
#2: What number can be subtracted from both the numerator and denominator of 47/59 to produce a fraction equal to 7/9?
need help, final's coming up...please...
Click here to see answer by longjonsilver(2297)

Question 4623: how do u factor this out..having trouble: x^3 + 8y^3
Click here to see answer by longjonsilver(2297)

Question 4623: how do u factor this out..having trouble: x^3 + 8y^3
Click here to see answer by rapaljer(4671)

Question 4633: How does one find the particular equation of the quadratic function that passes through a vertex of (5, -1) and the point (8, -28)?
Click here to see answer by longjonsilver(2297)

Question 4627: A rancher wants to yield the maximum amount of edible beef off his square mile of land. At first he finds that as he adds more cattle, his yield goes up. However, if he overgrazes, the harvest goes down. An agricultural agent tells him that his yield will vary quadratically with the number of animals that he grazes. For five head of cattle, his production is 8,750 pounds of beef, and for 10 head, he reaps 15,000 pounds of beef. He has no production when he was grazing no cattle.
a) Define the variables, write the odered pairs, and find the particular equation of this function.
b) What number of cattle will give him his maximum profit in number of pounds?
c) What is this weight?
d) What is the domain and range of this function?

Click here to see answer by rapaljer(4671)

Question 4660: I am stuck on this problem, please help!
Complete the ordered pair so that is satisfies the given equation.
a=b^2+4b+5 (-2, ??) (??,2)
Thanks in advance for your help!!
Click here to see answer by Earlsdon(6294)

Question 4651: urgent....need help?
the difference of two numbers is 11, and their product is 42. Find these numbers.
choices:
a. -14 and 3
b. -3 and 14
c. pair -14 and 3, -3 and 14
d. pair -14 and 3, 3 and 14
respond asap
Click here to see answer by Earlsdon(6294)

Question 4646: sorry to bother u guys again...but ur help has taught me alot..thanks =)
#1 how do u do this.." The ratio of the measures of two complementary angles is 4 to 1. Find the measure of each angle?
also...
#2 A wire 60 inches long is cut into two pieces whose lengths have a ratio of 3 to 1. To find the length of each piece, let x be the length of the shorter piece. Since the wire is 60 inches long, and since the shorter piece is x inches long, what is the length of each piece...??
its confusing me...help...
Click here to see answer by longjonsilver(2297)

Question 4707:
How do I find the length of the sides of the original square? If each side of a square is increased by 10cm. The area of the resulting square is 9 times the area of the original square.
Click here to see answer by Earlsdon(6294)

Question 4741: A 12 foot ladder is leaning against a wall. If the ladder reaches 8 feet high on the wall, what is the angle the ladder forms with the ground to the nearest degree?
Click here to see answer by longjonsilver(2297)

Question 4751: can you help me figure out how to solve this problem using the proper quadratic equation?
Ric cuts half a rectangular lawn, 40m by 30m, by moving strips of equal width around the perimeter.Darin cuts the small rectangle left. How wide a strip does Ric cut so that they share the work equally?
Thank you
Click here to see answer by longjonsilver(2297)

Question 4738: A support cable for a 64 foot tower forms a 70� angle with the ground. What is the length of the cable to the nearest foot? Thankx
Click here to see answer by arunpaul(104)

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