Tutors Answer Your Questions about Inequalities (FREE)
Question 67764: bus# 17 runs from apple street to ellis avenue making 3 stops in between. at bonz avenue, 2 people got off and 5 people got on the bus. at crump road, half the people on the bus got off and 4 people got on. at dane square, 3 people got off and 1 person got on. at the finail stop, the remaining 12 people got off. how many people were on the bus when it left apple street?
Click here to see answer by ankor@dixie-net.com(15652)   |
Question 67976: Could someone please please help me with this:
f(x)= (x²-1)(x-1).
1.Show why f(x)is greater or equal to 0 in each of the following cases:
a)x>1
b)0
c)-1
2.Deduce that x^3+1>x^2+x for all x>-1.
Thank you very for your great help!!!!!!!
Click here to see answer by Edwin McCravy(8909)  |
Question 67977: Could someone please please helpme this:
1. Let a,b,c be the three distinct positive real numbers.
Thank you very for your great help!!!!!!!
a) Prove that a^3+b^3>a^2xb+b^2xa.
b) Write down , without proving them, similar inequalities for (a^3+c^3) and (b^3+c^3).
c) Hence, or otherwise, prove that 3(a^3+b^3+c^3)>(a^2+b^2+c^2)(a+b+c)
2.State why (a-b)^2(a^2+b^2) is non-negative, for all a,b belong to R. Deduce that a^4+b^4is greater or equal to 2(a^3xb-a^2xb^2+axb^3).
Thanks a million!!! I am waiting for a solution for ages. Please help me , i am desperate...
Click here to see answer by venugopalramana(3286) |
Question 68415: A long-distance phone call costs $0.96 for the first minute and $0.72 for each additional minute or portion thereof. Write an inequality reprssenting the number of minutes a person could talk without exceeding $6.
Click here to see answer by ptaylor(2048)  |
Question 68505: Doreen has started a part time business making and selling bird feeders. her equipment cost $75. If she makes a profit of $6 on each bird feeder, how many must Doreen sell to make a total profit of more than $135?
Click here to see answer by stanbon(57347) |
|
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
|
