Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 177935: Evaluate the discriminant of each equation. How many real and imaginary
solutions does each have?(please help me with this.. i realy need it done in like a very fast time.. please please))
37. x2 + 5x + 6 = 0
38. 3x2 - 4x + 3 = 0
39. -2x2 - 5x + 4 = 0
40. 16x2 - 8x + 1 = 0
Click here to see answer by edjones(7569)   |
Question 177927: The Smith's have 160 meters of fencing available to build a rectangular garden. One side of the garden touches a side of the house and doesn't need any bordering. Algebraically find the dimensions that will give the maximum area.
Click here to see answer by Fombitz(13828)  |
Question 177922: A rectangular pool measures 8m by 4m. A deck of unifrom width is to be built all the way around the pool such that the total area of the pool and deck will be 96m^2. Set up and solve a quadratic equation to determine the width of the deck.
Click here to see answer by Mathtut(3670) |
Question 177929: A baseball is hit and follows a parabolic path described by the function y=-3x^2+18x+1, where x represents the time in seconds after the ball is hit and y represents the ball's height in meters from the ground. Algebraically determine the maximum height and the time at which the ball reaches its maximum height.
Click here to see answer by nerdybill(6958)  |
Question 178029: Linear System
Use the graphing to find the point of intersection of each pair of lines.
b) y=1/2x-4
y=2x-1
f) x+y-4=0
5x-y-8=0
Can you pleaseeeeee do both of them because i have to do a, c, d, e, and g for that i need to understand b and f okay thank you sooo much
Click here to see answer by stanbon(57332) |
Question 178100: 1. If tn=2n-3, for what value of 'n'is tn=5?
Is it -1,1,4 OR 7??????? I think the answer is 4 or 7????????
2. Which sequence represents an exponential function????
a) {1,6,11,16,21,...}
b) {16,8,4,2,1,...}
c) {2,8,18,32,50,...}
d) {1,8,27,64,125,...} I think it is (b)???
3. Which function represents a geometric sequence?
a) {3*4,3*4^2, 3*4^3,3*4^4,...}
b) {3+4,3+4+4,3+4+4+4,...}
c) {3*4,3*5,3*6,3*7,...}
d) {3+4,3+4^2,3+4^3,...}
Click here to see answer by stanbon(57332) |
Question 178100: 1. If tn=2n-3, for what value of 'n'is tn=5?
Is it -1,1,4 OR 7??????? I think the answer is 4 or 7????????
2. Which sequence represents an exponential function????
a) {1,6,11,16,21,...}
b) {16,8,4,2,1,...}
c) {2,8,18,32,50,...}
d) {1,8,27,64,125,...} I think it is (b)???
3. Which function represents a geometric sequence?
a) {3*4,3*4^2, 3*4^3,3*4^4,...}
b) {3+4,3+4+4,3+4+4+4,...}
c) {3*4,3*5,3*6,3*7,...}
d) {3+4,3+4^2,3+4^3,...}
Click here to see answer by gonzo(654) |
Question 178103: Which represents the range for -(y+3)=(x-4)^2 :
a){y such that y is less than or equal to -3,y belongs to a set of real numbers}
b){y such that y is greater than or equal to 4, y belongs to a set of real numbers}
c){y such that y is less than or equal to 3, y belongs to a set of real numbers}
d){y such that y is less than or equal to -4, y belongs to a set of real numbers}
I hope someone canhelp me, I always have trouble with these:(
Click here to see answer by gonzo(654) |
Question 178201: Chocolate chip cookies are sold fo $6.95 per pound and white chocolate cookies for $5.95 per poud. How many pounds of chocolate chip cookies should be mixed with 4 pounds of white chocolate cookies to obtain a mixture that sells for $6.75 per pound?
Click here to see answer by stanbon(57332) |
Question 178201: Chocolate chip cookies are sold fo $6.95 per pound and white chocolate cookies for $5.95 per poud. How many pounds of chocolate chip cookies should be mixed with 4 pounds of white chocolate cookies to obtain a mixture that sells for $6.75 per pound?
Click here to see answer by solver91311(16877)  |
Question 178187: Does this function have a maximum or a minimum?  After solving this equation I came up with (x=1) and (x=-5). Am I correct? Please include details. I don't yet know how to find a max or min. Please explain how to find this answer.
Click here to see answer by nerdybill(6958) |
Question 178244: Chocolate chip cookies are sold for $6.95 per pound and white chocolate cookies for $5.95 per pound. How many pounds of chocolate chip cookies should be mixed with 4 pound of white chocolate cookies to obtain a mixture that sells for $6.75 per pound?
Click here to see answer by stanbon(57332) |
Question 178406: A farmer decides to enclose a rectangular garden using the side of a barn as one side of the rectangle. What is the maximum area that the farmer can enclose with 100ft of fence? What should the dimensions of the garden be to give this area?
Click here to see answer by EMStelley(187) |
Question 178424: I am totally stuck. I do not think I can answer in decimals, yet that is what I keep coming up with. In other exercises like this I get an answer with a square root in it......
solve 3x^2-5x-11=0
A. what are the solutions
B. What are the x intercepts
Simplify your answers. Type exact answers using radicals as needed. Express complex numbers in terms of i. Use commas to separate your answers as needed.
Click here to see answer by jim_thompson5910(28593) |
Question 178495: use the following equation, where x and y are the measured in meters, to model a cross section of the Barringer Meteor crater, near Winslow, Arizona
y=1/1800(x-600)(x+600)
1) assuming the lip of the crater is at y=0, how wide is the crater?
2) what is the depth of the crater?
Click here to see answer by stanbon(57332) |
Question 177829: Quadratic Equations
Complete the square to rewrite each relation in the form y=a(x-h)^2+k. Then, sketch a graph of each parabola, labelling the vertex, the axis of symmetry, and two other points.
a)y=x^2+4x+10
b)y=-x^2+6x-8
c)y=-2x^2-12x-7
Thank you very much
Click here to see answer by jojo14344(1512) |
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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
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