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Question 494501: What is the answer to:
4x7g
Click here to see answer by Alan3354(69443)

Question 494585: I really don't get this, can someone help me?
Express in terms of i.
4 square root -225
Click here to see answer by stanbon(75887)

Question 494576: Hi, I really need help please.

In solving the equation (x + 1)(x � 2) = 54, Eric stated that the solution would be
x + 1 = 54 => x = 53
or
(x � 2) = 54 => x = 56
However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help Eric to understand better; solve the problem yourself, and explain your reasoning.
Click here to see answer by htmentor(1343)

Question 494615: I need help factoring this: x^4-6x^2+7
Click here to see answer by stanbon(75887)

Question 494645: 3x3x3x3xy how do you write it exponential form
Click here to see answer by MathLover1(20849)

Question 494578: Can someone please help me?

If a stone is tossed from the top of a 230 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 � 10t + 230, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest hundredth�s place; include units in your answer.
Click here to see answer by ankor@dixie-net.com(22740)

Question 494776: Please help!!
I need answers to the following questions, I really need to past this test.
1) In solving the equation (x + 1)(x � 2) = 54, Eric stated that the solution would be
x + 1 = 54 => x = 53 or (x � 2) = 54 => x = 56
However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help Eric to understand better; solve the problem yourself, and explain your reasoning.
2)If a stone is tossed from the top of a 190 meter building, the height of the stone as a function of time is given by h(t) = -9.8t^2 -10t +190, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest hundredth�s place; include units in your answer.
3) Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions.
8x^2 + 2x + 4 = 0
A) Two different irrational solutions
B) Two different imaginary solutions
C)Exactly one rational solution
D)Two different rational solutions
4) Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.
18x + 6y = 78
12x + 54y = -48
5)Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
14x+18y =-54
-4x-14y = 42
Please I need the answers to these questions ASAP like yesterday. Been trying all day to figure out the answers to the above 5 questions, thank you

Click here to see answer by sudhanshu_kmr(1152)

Question 494903: Simplify expression.
0.25(8+4p)-0.5(6+2p)
Click here to see answer by IFY(62)

Question 495019: Solve equation.
2[x-(2x+4)+3]=2(x+1)
Click here to see answer by rfer(16322)

Question 495016: Simplify expression.
0.25(8+4p)-0.5(6+2p)
Click here to see answer by rfer(16322)

Question 495038: I really need someone's help please and thank you....
Multiply
-x � 1
by
-4x2 � 2x + 2
Click here to see answer by IFY(62)

Question 495117: 10\2+8=
Click here to see answer by rfer(16322)

Question 495207: Find a formula for the general term of the sequence by looking at the first five terms of the sequence.
1) (1/2, 1/4, 1/8, 1/16,.....)
2) (2,7,12,17,22,........)
3) (0,2,0,2,.....)
4) (1/2, 1/4, 1/6, 1/8, 1/10,......)
Click here to see answer by bucky(2189)

Question 495332: How do you define a variable? For example: Define a variable and write an algebraic expression for this phrase: the difference of 8 and a number.
Click here to see answer by Earlsdon(6294)

Question 495788: Evaluate -x when x = -8
Click here to see answer by Alan3354(69443)

Question 495859: 3x^2 + 5x +1=0
Click here to see answer by NirMath4U(7)

Question 495823: -13m-(-4n)-12=19
n-6m+(-13)=-8
M=
N=
Click here to see answer by NirMath4U(7)

Question 495491: Show that every two successive terms of the Fibonacci sequence are relatively prime by induction
Click here to see answer by richard1234(7193)

Question 495835: 6w-(-a)=4+9w
2w-(-7a)=8+9a
W=
A=
Click here to see answer by ptth176(50)

Question 496013: how much is 60% of 10 questions in a test
Click here to see answer by Alan3354(69443)

Question 496069: Kate and Allie sell stereos. Last month Kate sold 14 more stereos than Allie. Together they sold 92. How many stereos did Allie sell?
Click here to see answer by NicholaT(2)

Question 496142: I really need help. Plse and thinks;)
Click here to see answer by Alan3354(69443)

Question 496910: Find three consecutive odd integers whose sum is 111.
Click here to see answer by Alan3354(69443)

Question 496889: How do you do you do or resolve a problem like how to do a mixed number to a decimal to a percent???
Click here to see answer by Alan3354(69443)

Question 497118:
Click here to see answer by Alan3354(69443)

Question 497148: A cell phone company charges $.35 for the first minute but only $.10 every minute after that. Why would the equation be, that Eric talked if the bill for the call was $5.45?
Click here to see answer by jorel1380(3719)

Question 497270: What are functions
Click here to see answer by richard1234(7193)

Question 497793: 34+0+18+26
Click here to see answer by Alan3354(69443)

Question 497981: 2n-7=5n-10
Click here to see answer by jorel1380(3719)

Question 498105: The table below gives the total spectator attendance for various U.S. sports in 1997.
Sport Attendance (millions)
Pro Baseball 64.9
College Basketball (Men�s) 27.7
College Basketball (Women�s) 6.7
Pro Basketball (Men�s) 21.7
College Football 36.9
Pro Football 14.8
Pro Hockey 17.1
Determine to the nearest tenth the median of these attendance numbers.
Please help me now!!!!!Tomorrow is deadline.Thanks
Click here to see answer by richard1234(7193)

Question 497926: 2n+3n+7=-41
Click here to see answer by ptth176(50)

Question 498152: Hello!
Find the equation of the straight line,
trough (4,-2) and parallel with 2x+y-5 = 0.
Click here to see answer by Maths68(1474)

Question 498149: The length of a rectangleis 6m more than 4 times the width. The perimeter is 72m. Find the length and the width
Click here to see answer by Maths68(1474)

Question 498334: Show that for all positive integers n, (n^5)-n is divisible by 5
Click here to see answer by tinbar(133)

Question 498377: What's 373x7?
Click here to see answer by Alan3354(69443)

Question 498402: An architect drew the blueprint for a new office building. He used a scale in which 1 inch represents 7.5 feet. The floor of an office in the building will have actual dimensions of 13 feet by 17 feet. What will be the dimensions on the blueprint?
Click here to see answer by KatieMose(5)

Question 498442: 6x=18
Click here to see answer by Alan3354(69443)

Question 498474: Si a +3 = b cual es el valor de ( a-b ) + ( b-a)
Click here to see answer by solver91311(24713)

Question 498559: How would you write two is subtracted from a number, and then the difference is divided by three. The result is thirty.
Click here to see answer by stanbon(75887)

Question 498559: How would you write two is subtracted from a number, and then the difference is divided by three. The result is thirty.
Click here to see answer by solver91311(24713)

Question 498578: 7[(18-6)-6]
Click here to see answer by rfer(16322)

Question 498607: Show me how to do this problem
3�2+5/9
Click here to see answer by rfer(16322)

Question 498642: Twice the sum of 16 and a number is the same as that number increased by 36.5
Click here to see answer by rfer(16322)

Question 498282: Given A = {1, 2, 3}, B = {2, 4, 6}, C = {1, 2, 3, 4, 5, 6, 7, 8}
list all of the subsets of A.
What's the answer?
Click here to see answer by 0221462(1)

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