Tutors Answer Your Questions about Linear-systems (FREE)
Question 156652: I can not figure out this problem and have tried it over and over. Please HELP me?
Section 2.4, #67 of my textbook
-3r-4(r+2)=11
-3r-4r+8=11
-7r+8-8=11-8
This is where I get stuck. The answer in my book says -19/-17. I see how to get the -19, but can not get -19/-17.
Click here to see answer by jim_thompson5910(35256)  |
Question 156697: I hope I picked the right topic...
Here is the word problem, out of my book:
In the 2005 regular baseball season, the Chicago White sox won 27 fewer than twice as many games as they lost. They played 162 regular-season games. How many wins and losses did the team have?
I have been trying to figure this problem out with my friend for the last two days. We are stuck on it. I finally thought that I figured it out today, and seeing as it has been such a burden to us, I decided to look up the figures online and found out that I was wrong! So now I know what the correct answer is, but I want to know how to reach it. Here is what I had done when I thought I finally figured it out:
2x-27=62
2x=189
x=94.5
I questioned myself when a fraction came up, but seeing as it is a half, I figured maybe they tied one game with another team??
From there, I went on to do this:
162-94.5=67.5
So I figured that 67.5 and 94.5 were my answers. When I added them together to check my math, I found that they do add up to 162. I don't know anything about baseball so I don't know if tying is even possible... I guess it isn't, since my answer is wrong.
Some help in understanding how the correct answer of 99 wins and 63 losses is reached would be wonderful.
Thank you very much.
Click here to see answer by nerdybill(7384)  |
Question 156697: I hope I picked the right topic...
Here is the word problem, out of my book:
In the 2005 regular baseball season, the Chicago White sox won 27 fewer than twice as many games as they lost. They played 162 regular-season games. How many wins and losses did the team have?
I have been trying to figure this problem out with my friend for the last two days. We are stuck on it. I finally thought that I figured it out today, and seeing as it has been such a burden to us, I decided to look up the figures online and found out that I was wrong! So now I know what the correct answer is, but I want to know how to reach it. Here is what I had done when I thought I finally figured it out:
2x-27=62
2x=189
x=94.5
I questioned myself when a fraction came up, but seeing as it is a half, I figured maybe they tied one game with another team??
From there, I went on to do this:
162-94.5=67.5
So I figured that 67.5 and 94.5 were my answers. When I added them together to check my math, I found that they do add up to 162. I don't know anything about baseball so I don't know if tying is even possible... I guess it isn't, since my answer is wrong.
Some help in understanding how the correct answer of 99 wins and 63 losses is reached would be wonderful.
Thank you very much.
Click here to see answer by jim_thompson5910(35256) |
Question 156740: Please help me solve this equation:Info: If the system has an infinite solution set,specify it and give three solutions. If the system has no solution, then it mentions for me to say so.
3x-2y=6
5x+3y+9=0
thank-you
Click here to see answer by Earlsdon(6294) |
Question 157087: Rachel loves to color and she can use both hands at same time. When she uses one of her fat crayons it wears down to nothing after 15 hours. Her skinny crayons wear down to nothing after coloring after 6 hours. One day she starts coloring at 10:30am and was given 2 crayons of same height, one fat and one skinny. She began coloring with both crayons, one in each hand. AT WHAT TIME WILL SKINNY CRAYON BE 1/2 HEIGHT OF FAT CRAYON?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 157506: A basketball player scored 9 times during one game,. He scored a total of 10 points, two for each field goal and one for each free throw. How many fiels goals did he make? How many free throws?
Hoe many field goals did he make?
How many frr throws did he make
Click here to see answer by jojo14344(1513) |
Question 157506: A basketball player scored 9 times during one game,. He scored a total of 10 points, two for each field goal and one for each free throw. How many fiels goals did he make? How many free throws?
Hoe many field goals did he make?
How many frr throws did he make
Click here to see answer by Clewis(1) |
Question 157533: 3x - y = 6
3x - y)/3 = 2
A(4, -1)
B(1, -2)
C(-5, 2)
D(-1, 5)
ENo Solution
F3x - 6
I'm really confused on this one, I'm not sure what to do. If someone could show me the steps and the correct answer I would appericiate it very much. Thank you for your time!
Click here to see answer by Alan3354(69443)  |
Question 157597: here's another one:
a bus traveled on a level road for 3 hours at an average speed 20 miles per hour faster than it traveled on a winding road. the time spend on the winding road was 4 hours. find the average speed on the level road if the entire trip was 305 miles.
Click here to see answer by josmiceli(19441)  |
Question 158272: I can not set up the two linear equations for the following word problem.
THERE ARE TWO FLOOR PLANS FOR NEW HOMES. Floor plan #1 and Floor plan #2 and there are 56 houses avalible.
There are three times as many floor plan #2 as there are floor plan #1.
I tried
X+Y =56
x+3y=56
But mathmatically it is not comming out right. I also know the answer is 14 #1 floor plans and 42 #2 floor plans but I am having a problem setting up the equations.
Click here to see answer by checkley77(12844) |
Question 158341: The question is Solve the following system of equations using the substitution method. Check your answer.
I'm not sure how to do substitution, so if you could tell me were everything is coming from it would be a great help.
Click here to see answer by Earlsdon(6294) |
Question 158342: Solve the following using the elimination method.
5y - 3x = -20
3x - 3y = 14
I'm having trouble with these methods. So if you could show me how you got the numbers you got and what you did exactly, that'd be great.
Click here to see answer by atique.ah(27) |
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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
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