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Question 550112: The natural number n is the smallest number satisfying the following properties: when divided by 3 remainder is 1,when divided by 4 remainder is 2,when divided by 5 remainder is 3,when divided by 6 remainder is 4,what is the remainder in case of division by 7?
Click here to see answer by fcabanski(874)

Question 550157: An express train makes a run of 240 km at a certain speed.Another train whose speed is 12 km/hr less takes an hour longer to cuver the same distance. Find the speed of the express train in km/hr.
Click here to see answer by lwsshak3(6506)

Question 550159: A school community had planned to reduce the number of grade 9 students per class room by constructing additional calss rooms. However, they constructed 4 less rooms than they planned. As the result, the number of students per class was 10 more than they planned. If there are 1200 grade 9 students in the school, determine the current number of class rooms and the number of students per class.
Click here to see answer by stanbon(57356)

Question 550156: In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced to 200km/hr and the time increased by 30 minutes. Find the duration of the flight.
Click here to see answer by Alan3354(30993)

Question 550155: A piece of cloth costs 200 us. if the price was 5 meter longer, and the cost of each meter of cloth was 2 us less, the cost of the piece would have remained unchanged. how long is the piece and what is its original price per meter?
Click here to see answer by josmiceli(9680)

Question 550321: Simplify each expression
(6b^2+2b^4+8b^3+3b)-(4b^3-7+7b^4-6b^2)-(b+6b^3+3-2b^2)
Click here to see answer by jim_thompson5910(28595)

Question 550322: solve the equation
1/5(x-10)+2/5=-x/3
Click here to see answer by jim_thompson5910(28595)

Question 550222: if a man travels at the speed of 40km/hr then he reaches the office 5min late and if he travels at the speed 50km/hr then he reaches 3min early,find the distance and time?
Click here to see answer by ankor@dixie-net.com(15652)

Question 550377: A man bought a certain number of chairs for Rs 10,000.He kept one for his own use and sold the rest at the rate Rs 50 more than he gave for one chair.Besides getting his own chair for nothing,he made a profit of Rs 450.How many chairs did he buy?pls...help me.
Click here to see answer by fcabanski(874)

Question 550387: 6500 us were divided equally among a certain number of persons. had there been 15 more persons, each would have got 30 us less. find the original number of persons.
Click here to see answer by JBarnum(2044)

Question 550388: a person on tour has 360 us for his daily expenses. if he extends his tour for 4 days , he has to cut down his daily expense by 3 us. find the original duration of the tour.
Click here to see answer by JBarnum(2044)

Question 550396: The speed of a motor boat in still water is 60kph. It goes 100km up the river and then comes the 100km back in a total of 12 hours. what is the speed of the current of the river?
A caregiver earns Php150,000 a month in the USA. He spends 5% of his income for food, 10% for clothes, entertainment, and other miscellaneous items. He also spends 15% for the tuition fees of his children and 20% for food of his family in the Philippines. How much did he save for a month?
Click here to see answer by josmiceli(9680)

Question 550389: an express train makes a run of 240 km at acertain speed. Another train whose speed is 12 km/hr less takes an hour longer to cover the same distance. find the speed of the express train in km/hr.
Click here to see answer by josmiceli(9680)

Question 550390: the speed of a boat in still water is 15 km/hr. it needs four more hours to travel 63 km against the current of a river than it needs to travel down the river. Determine the speed of the current of the river.
Click here to see answer by scott8148(6628)

Question 550395: Can you show me the sign and how to solver the equation by analysis into the sum of square?
Click here to see answer by Alan3354(30993)

Question 550607: evaluate x^3 when x=5
Click here to see answer by Alan3354(30993)

Question 550612: simplify (5h^9)^6
Click here to see answer by jim_thompson5910(28595)

Question 550687: When you solve a quadratic equation, what information does your solution give you?
Click here to see answer by stanbon(57356)

Question 550671: Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring?
-b b2 - 4ac 2a
Use the part of the quadratic formula that you chose above and find its value given the following quadratic equation:
2x2 + 7x + 3 = 0

Click here to see answer by stanbon(57356)

Question 550041: A committee which consists of two mathematicians and three scientists will be formed from four mathematicians and six scientists. How many possible committees can be formed if:
a. any of the mathematicians and scientists are included?
b. one particular scientist must be in the committee?
c. two particular mathematicians must be in the committee?
d. two particular scientists must not be in the committee?

Click here to see answer by stanbon(57356)

Question 550690: What does it mean if your solution is a complex number? Explain what a complex solution means both algebraically and graphically.
Click here to see answer by richard1234(5390)

Question 550669: Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring?
-b b2 - 4ac 2a
Use the part of the quadratic formula that you chose above and find its value given the following quadratic equation:
2x2 + 7x + 3 = 0

Click here to see answer by KMST(1868)

Question 550834: I need the derivative of :
y = (x^(5/3)/5) - (x^(4/3)/2)
The answer is supposed to be y' = (x^(2/3)/3) - (2x^(1/3)/3)
Help me I want to know how to do this.
Is there a solver on algebra.com to do this? Thank you
Click here to see answer by Alan3354(30993)

Question 550953: (2, -27) (3, -51) (4, -83)
Click here to see answer by Alan3354(30993)

Question 551021: y=(3x+9)(2x+4)
Click here to see answer by nyc_function(2733)

Question 551052: find k so thqqt the equation x2-11x+k=0 andx2-14x+2k=0 may have a common root

Click here to see answer by oberobic(2304)

Question 551052: find k so thqqt the equation x2-11x+k=0 andx2-14x+2k=0 may have a common root

Click here to see answer by KMST(1868)

Question 551010: The sum of the two roots of a quadratic equation is 5 and their product is -6. What could be the equation?
Click here to see answer by ankor@dixie-net.com(15652)

Question 551053: Here is a problem:
2 2
(3) + (4) = (I believe the anwser is: (9) + (16) = 25
But there are time when only the exponents are added and not the whole
numbers. When do I know how to tell the difference in solving?
Click here to see answer by mananth(12270)

Question 551123: x^2+5x+6=0
Click here to see answer by jim_thompson5910(28595)

Question 551109: How many real and imaginary roots does 4x^2+8x+4 have?
Click here to see answer by jim_thompson5910(28595)

Question 551125: convert to vertex form

y=x^2+9x+12
Click here to see answer by jim_thompson5910(28595)

Question 551022: y=(x-3)(-x-4)
y=x^2-16
Click here to see answer by ankor@dixie-net.com(15652)

Question 551206: Find the equation of the axis of symmetry for y=2x^2+8x-1. Use the formula x= -b/2a
Click here to see answer by Alan3354(30993)

Question 551007: The thickness of concrete that lines a swimming pool is a function of the depth of the pool. If d represents the depth, in feet, of the pool and t(d) represents the thickness, in inches, of the concrete, then t(d)=. Of the following, which is the closest approximation to the thickness, in inches, of the concrete at a depth of 10 feet?
A) 0.5 B)1.5 C)6.2 D)7.2 E) 10.5
Click here to see answer by richard1234(5390)

Question 550693: What does it mean if your solution is a complex number? Explain what a complex solution means both algebraically and graphically.Thanks a ton!!
Click here to see answer by richard1234(5390)

Question 551563: what effect does the coefficient a have on the whole equation ax^2+bx+c?
Click here to see answer by Alan3354(30993)

Question 551695: If a farmer digs his potatoes today, he will have 100 bags worth $2 a bag. Every week he waits the crop increases by 10 bags and the price drops by 10 cents a bag. When should the farmer dig his potatoes in order to maximize his profit?
I appreciate any help:)
Click here to see answer by ankor@dixie-net.com(15652)

Question 551828: Solve: 5x^2 -4x -33 = 0

Click here to see answer by jim_thompson5910(28595)

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