Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 156809: whAT IS THE ANSWER TO THIS SEQUENCE 8,11,16,23,32,43
Click here to see answer by scott8148(6628)

Question 156882: Solve for the specified variable.
S =a/1-r for r

Click here to see answer by checkley77(12844)

Question 156881: 9) Solve. Round results to the nearest thousandth.
7x2 - 6x - .4255 = 0

Click here to see answer by checkley77(12844)

Question 156833: prove that y=x-3 is a tangent to the curve y=x^2-5x+6.
Click here to see answer by checkley77(12844)

Question 156899: ax+by+bz+ay+bx+az=?
Click here to see answer by Alan3354(69443)

Question 156900: Solve the problem. Tom Quig traveled 280 miles east of St. Louis. For most of the trip he averaged 60 mph, but for one period of time he was slowed to 10 mph due to a major accident. If the total time of travel was 8 hours, how many miles did he drive at the reduced speed?
Click here to see answer by ankor@dixie-net.com(22740)

Question 156824: for what values of p is 4x^2+px+49=0 a perfect square?
Click here to see answer by checkley77(12844)

Question 156920: Graph the quadratic equation, label the ordered pairs for the vertex and the y-intercept
y= x^2 + x-2
Click here to see answer by Alan3354(69443)

Question 156920: Graph the quadratic equation, label the ordered pairs for the vertex and the y-intercept
y= x^2 + x-2
Click here to see answer by checkley77(12844)

Question 156932: Evaluate the discriminate b^2-4ac. Then use the answer to state how many real number solutions exist for the rquation
y=x^2+8x+16
Click here to see answer by jim_thompson5910(35256)

Question 156898: Solve the problem. Chuck and Dana agree to meet in Chicago for the weekend. Chuck travels 84 miles in the same time that Dana travels 78 miles. If Chuck's rate of travel is 3 mph more than Dana's, and they travel the same length of time, at what speed does Chuck travel?
Click here to see answer by ankor@dixie-net.com(22740)

Question 156973: 8x^6-7x^3y^3-y^6
Click here to see answer by jim_thompson5910(35256)

Question 156974: -6z^2+7z+3=0
Click here to see answer by jim_thompson5910(35256)

Question 157090: How would you solve...
Write the equation y + 1/4x-2 in standard form using only integers and a positive
coefficient for x.
Click here to see answer by Alan3354(69443)

Question 157092: How would you solve...
Write the equation y = 1/4x-2 in standard form using only integers and a positive
coefficient for x.
Click here to see answer by Alan3354(69443)

Question 157131: Find the vertex for the graph of the quadratic function.
f(x) = x^2 - 11
Click here to see answer by Alan3354(69443)

Question 157134: Solve using the quadratic formula: z^2 - 3z = 40
Click here to see answer by Alan3354(69443)

Question 157251: I am given the zeros (ie. cross x axis at -3 and 4), and told the equation crosses the y axis at 48, how would I make a quadratic equation out of this?
Click here to see answer by nerdybill(7384)

Question 157303: divide 30 into 2 equal parts such that the square of the smaller part exceeds the other part by 60
Click here to see answer by checkley77(12844)

Question 157331: 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. Solution 9, only solution.
Click here to see answer by ankor@dixie-net.com(22740)

Question 157422: please helo graph this equation
y = x^2 - 5
Click here to see answer by gonzo(654)

Question 157410: The length of a rectangle is 1.6 times the width Find the dimensions of rectangle if it's area is 9000m^2
Click here to see answer by gonzo(654)

Question 157428: solve 30=w(w+1)
Click here to see answer by ptaylor(2198)

Question 157581: base of temple is a rectangle with a perimeter of 300m. the area of the base is 4400m. what are the dimensions of the base?
all i have is
l+w=perimeter
lxw=4400
Click here to see answer by checkley77(12844)

Question 157655: Find any extrema for: f(x)= -x^-5x+3 Is this maximum or a minimum?
This is how far I got, is it correct?
x= -[x^-5x+6.25] 6.25+3
x= -[x-2.5]^ + 9.25
x=2.5 y=9.25 This is a maximum
Click here to see answer by edjones(8007)

Question 157874: one person proofreads a copy for a small newspaper in 4 hours. If a second proofreader is also emplyoed, the job can be done in 2.5 hours. how long does it take for the 2nd proofreader to do the job alone.
Click here to see answer by vleith(2983)

Question 157876: I've been working on an assignment and I'm stumped. I have to solve quadratic equations with the following steps:
a) Move the constant term to the right side of the equation.
b) Multiply each term in the equation by four times the coefficient of the x2 term.
c) Square the coefficient of the original x term and add it to both sides of the equation.
d) Take the square root of both sides.
3) Set the left side of the equation equal to the positive square root of the number on the right side and solve for x.
f) Set the left side of the equation equal to the negative square root of thenumber on the right side of the euqation and solve for x.
I have two equations I'm stuck on:
1) x2 - 2x - 13 = 0
2) 2x2 - 3x - 5 = 0
Click here to see answer by MathLover1(20849)

Question 157758: Two television monitors sitting beside each other on a shelf in an appliance store have the same screen height. One has a conventional screen, which is 3 inches wider than it is high. The other has a wider, high-definition screen, which is 1.8 times as wide as it is high. The diagonal measure of the wider screen is 15 inches more than the diagonal measure of the smaller. What is the height of the screens, correct to the nearest 0.1 inch?
I tried the Pythagorean theorem & got 2w^2+6w+24=d^2 and got stuck.
Click here to see answer by Fombitz(32388)

Question 157892: If your test scores are 80 and 100, then the arithmetic mean of you scores is 90. The geometric mean of the scores is a number h such that
80/h=h/100
Are you better off with the arithmetic mean or the geometric mean?

Click here to see answer by Fombitz(32388)

Question 157988: Find the vertex for the graph of the quadratic function.
f(x) = x^2 � 11
Click here to see answer by checkley77(12844)

Question 157982: Write a quadratic equation that has the solutions 1 and 8.
Click here to see answer by checkley77(12844)

Question 157979: 1 Solve by completing the square
X^2 + 10x +13 = 0
2. Solve using the quadratic formula
X^2 - 2x = 5x-2
3. Solve using quadratic formula
x^2 - 3x - 3 = -5
Click here to see answer by jim_thompson5910(35256)

Question 158043: solve:
18x^2+ 9x+2=0
x^2+14x-4=0

Click here to see answer by jim_thompson5910(35256)

Question 158127: I need some help on one of my math questions, I've included a picture of the diagram below
Consider the following open-top box layout with cuts (solid lines) and folds (dotted lines as indicated. The box is made by cutting out the corners but leaving sufficient material as flaps for gluing or tucking in.
http://picasaweb.google.com/swede5670/Math#5248354434228399282
Express the volume V of the resulting box as a function of the length of the corner cutout, X
Click here to see answer by nerdybill(7384)

Question 158146: The given pair of lines intersect. Find the point of intersection. Graph the lines.
35. L: x � y = -2

Click here to see answer by Alan3354(69443)

Question 158229: Graph the linear inequality
x+5y is equal to or greater than -1
Thanks for you help
Click here to see answer by gonzo(654)

Question 158275: The width of a rectangle is 4 less than twice its length. If the area of the rectangle is 24 cm, what is the length of the diagonal?
Click here to see answer by Ms.Smith(3)

Question 158223: Can someone help me Please? I can't seem to figure this one out.
S=1/3nr^2h+4nrh solve for r
Any help would be so great. Thank you.
Click here to see answer by scott8148(6628)

Question 158433: Is this one correct?
8*10^6
=80^6
Click here to see answer by nerdybill(7384)

Question 158508: Please help with my home work
1. solve by factoring
x^2-10x = -16
2. Solve using the square root property
5x^2 -1 =74
3. Solve using the square root property
(x + 6)^2 = 121
Click here to see answer by checkley77(12844)

Question 158644: The problem I am trying to figure out is: (a-2)^2=8 I have to use the square root property. I have no idea what I am doing wrong but this is what I have so far.sqrt[(a-2)^2]= +or-sqrt[8]
=a-2=+or-2
==a-2+2=3+or-2
a=3+or-2
a=3+2
a=5
or
a=3-2
a=1
Could you please tell me I have done wrong. And could you show the steps and explain this to me. I just don't understand. Thank you.
Click here to see answer by Alan3354(69443)

Question 158812: Z to the 2nd power - z = 12
Find the smaller solution of this equation.
Click here to see answer by checkley77(12844)

Question 158823: solve by quadratic formula
1/2x^2 + 1/3x - 1/6
it didn't work when i subed it in, what do i have to do to the numbers
Click here to see answer by checkley77(12844)

Question 158953: Can you please help me out with this equation?
y=-1(x-3)(x+1)
thank you very much
alyssa
Click here to see answer by checkley77(12844)

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