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Question 1090193: Two mechanics worked on a car. The first mechanic worked for
20
hours, and the second mechanic worked for
15
hours. Together they charged a total of
$2250
. What was the rate charged per hour by each mechanic if the sum of the two rates was
$125
per hour?

Click here to see answer by ikleyn(52786)

Question 1090883: Please help me with this, I tried to solve it, but cannot get the solution
Solve the system for x,y,z
2x+3y-z=4
3x-y+2z=5
x-4y+3z=1
Thank you.
Click here to see answer by Edwin McCravy(20056)

Question 1090977: Can someone help me?
I need to write the final answer as an ordered triple (x,y,z)
Solve the system for x,y,z
2x+3y-z=4
3x-y+2z=5
x-4y+3z=1
I tried it, but ended up weird.
Thank you.
Click here to see answer by Alan3354(69443)

Question 1090975: Please help me here.
Ax+By=C
Dx+Ey=F
Solve the system for x and y
I got x=C-By/A
y= (AF-CD)/(AE-BD)
Not sure if I am right.
Thank you.
Click here to see answer by jim_thompson5910(35256)

Question 1091186: y - x > -3?
Click here to see answer by ikleyn(52786)

Question 1091266: Verify by substitution that the root of 3x+4 =13 is 3
Click here to see answer by Alan3354(69443)

Question 1091411: Please help... I tried to solve this, but no result.
I eliminated z in 1&2,and 2&3, but both was 7x+5y=13. How can I get the answer as an ordered triple (x,y,z)?
solve the system for x,y,z
2x+3y-z=4 ....1)
3x-y+2z=5.....2)
x-4y+3z=1.....3)
Thank you.
Click here to see answer by htmentor(1343)

Question 1091410: simplify the expression 4x+2y^4-5x^3y^4-135-5x-3y^2+6y^4+111
Click here to see answer by MathLover1(20850)

Question 1091507: Solve the system of linear equations by graphing, substitution, or elimination.
y = 5x - 7
-3x - 2y = -12
Click here to see answer by Alan3354(69443)

Question 1091642: Part A: Explain why the x-coordinates of the points where the graphs of the equations y= 2-x and y = 8x+4 intersect are the solutions of the equation 2-x=8x+4. (4 points)
Part B: Make tables to find the solution to 2-x=8x+4 . Take the integer values of x between −3 and 3. (4 points)
Part C: How can you solve the equation 2-x=8x+4 graphically? (2 points)
Click here to see answer by josgarithmetic(39617)

Question 1091671: Solve for y.
3x+y=1
I subtracted 3x from 1 and got the answer y=1-3x. But my textbook says the answer is y=3x+1. What did I do wrong? Please help, thanks.
Click here to see answer by MathLover1(20850)

Question 1091679: Find the general form if an equation of the libe through the point A (5, -2) that is
A) parallel to the y axis & B) perpebdicular to the y axis
Click here to see answer by Alan3354(69443)

Question 1091715: 5(x+4)=25
Click here to see answer by Edwin McCravy(20056)

Question 1092027: X-1/3 +5=7 & justification
Click here to see answer by Alan3354(69443)

Question 1092140: What is the smallest value of x that satisfies the equation 8x^2 - 38x + 35 = 0? Express your answer as a decimal.

Click here to see answer by ikleyn(52786)

Question 1092140: What is the smallest value of x that satisfies the equation 8x^2 - 38x + 35 = 0? Express your answer as a decimal.

Click here to see answer by greenestamps(13200)

Question 1092193:
89 inch length of ribbon is to be cut into three pieces. The longest piece is to be 36 inches longer than the shortest piece, and the third piece is to be half the length of the longest piece. Find the length of each piece of ribbon.
Click here to see answer by Alan3354(69443)

Question 1092353: Solve using Gaussian elimination
5x − 3y − z = 2
x − 6y + z = 7
2x + 6y − 2z = −8
Click here to see answer by greenestamps(13200)

Question 1092508: For each question, define your variables, write a system of equations, and solve.
Suppose you have $200 in your account and you save $10 each week. your friend has $110 in their account and starts saving $15 each week. when will your account balances be the same?
Joey has $5.75 made up of all dimes and quarters. if joey has 38 coins, how many of each coin does he have?
Thank you!
Click here to see answer by greenestamps(13200)

Question 1092833: 1/2x+y=3
Click here to see answer by addingup(3677)

Question 1092968: divide 11 into two parts so that their product will be 24
Click here to see answer by Alan3354(69443)

Question 1092967: divide 11 into two parts so that their product will be 24.
Click here to see answer by Alan3354(69443)

Question 1092966: find two digit number in which the products of digit is 18 and run is 9?
Click here to see answer by Alan3354(69443)

Question 1093103: The fare f of a pasenger varies directly as the distance d of his destination
Click here to see answer by Alan3354(69443)

Question 1093169: solve by row equivalent
x+y+z=-2
2x+8y+5z=5
x+2y-z
Click here to see answer by ikleyn(52786)

Question 1093182: Solve by substitution. 7x � y = 4 and 5x + 2y = 1
Click here to see answer by jorel1380(3719)

Question 1093183: Solve by graphing. x = 3 and y = �2
Show work by filling in the blanks.
1. The graph of the equation x = 3 is a ______________ (vertical or horizontal) line
through ( ____, ____ ).
2. The graph of the equation y = -2 is a ______________ (vertical or horizontal) line through ( ____, ____ ).
Show graph and circle the final answer below.

Click here to see answer by addingup(3677)

Question 1093181: Solve by substitution. 4x � 3y = 5 and x + 2y = 4
Click here to see answer by Boreal(15235)

Question 1093209: |x+24|=-7x
Why is there an extraneous solution here?
Click here to see answer by Boreal(15235)

Question 1093209: |x+24|=-7x
Why is there an extraneous solution here?
Click here to see answer by ikleyn(52786)

Question 1093219: Solve by substitution. y = 4 � 3x and 3x + y = 5
Click here to see answer by Alan3354(69443)

Question 1093219: Solve by substitution. y = 4 � 3x and 3x + y = 5
Click here to see answer by MathLover1(20850)

Question 1093252: You must show all of your work to receive credit. All or nothing. Solve the system using any method. 3/x+4/y=5/2. 6/x+1/y=1/2
Click here to see answer by josgarithmetic(39617)

Question 1093252: You must show all of your work to receive credit. All or nothing. Solve the system using any method. 3/x+4/y=5/2. 6/x+1/y=1/2
Click here to see answer by ikleyn(52786)

Question 1093459: Hello. I need help with the following please:
6 1/2=--4(n-1)
Thank you very much.
Click here to see answer by Alan3354(69443)

Question 1093652: sally has only dimes and quarters in her pocket. she has 21 coins all together with a total value of $4.35. how many of each coin type does she have?
Click here to see answer by addingup(3677)

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