Questions on Algebra: Systems of Linear Equations answered by real tutors!

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Question 1145715: how much low fat milk (1% fat) and how much whole milk (4 % fat) should be mixed to make a 5gal of reduced fat milk (2% fat)?
x+y=5
1x+4y=5•2
Not sure if my equations are set up the correct way. I am confused on what to do since they are in percent. Please help thank you!

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Question 1145798: It's 207.5 miles from Amberwood to Bravotown. It's another 220 miles from Bravotown to C-town. Ethan drives 30 miles faster from Bravotown to C-town than from Amberwood to Bravotown. If his combined travel time is 12.3 hours, what are his average speeds?
What is the speed from Amberwood to Bravotown?
and
What is the speed from Bravotown to C-town?

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Question 1146105: 3/5y=12
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Question 1146264: Enter the value for x that makes the equation 23(x−6)=34(x+16) true.
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Question 1146552: A music festival sold two types of tickets, day passes and weekend passes. The day passes were $137, and the weekend pass was $150. The total ticket sales for the festival were $484,608. They sold 374 more day passes than weekend passes. How many day passes and how many weekend passes were sold?

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Question 1146552: A music festival sold two types of tickets, day passes and weekend passes. The day passes were $137, and the weekend pass was $150. The total ticket sales for the festival were $484,608. They sold 374 more day passes than weekend passes. How many day passes and how many weekend passes were sold?

Click here to see answer by josgarithmetic(39617) About Me 

Question 1146683: 3 x + 5 y = 2
9 x - 5 y = 9

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Question 1146749: f(x)=1.5x and the graph h
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Question 1146756: A party rental company has chairs and tables for rent. The total cost to rent 3 chairs and 5 tables is $38. The total cost to rent 6 chairs and 2 tables is $26. What is the cost to rent each chair and each table?
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Question 1146909: xy-7z=8 for y
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Question 1146920: Graph the system and write its solution

{y=-1/2x-1
{2x+y=-4
No solution or infinitely many solutions

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Question 1147234: -4(2x + 4) + 4 = 9(x - 9) - 3
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Question 1147234: -4(2x + 4) + 4 = 9(x - 9) - 3
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Question 1147377: consider
f(t)=−t2+nt+c
defined for all real numbers, where n,c
are both arbitrary constants. The function (f) has a maximum at t*=__________ and its value
is f(t*)=_______________. (Hint: Your last two answers should be formulas that depend on n
n or c, Simplify your answer before writing it on the box).

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Question 1147548: What is the slop- inersept form of the equation of the line that passes through the point and is parallel to the graph of the equation of(1,-2),4x-y=3

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Question 1147589: Three brothers are splitting the bills at an apartment the security deposit is $1,500 and the monthly rent is $900 so far each brother has paid $1,700 how many months have they lived in the apartment

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Question 1147758: On thursday a local hamburger shop sold a combination of 240 hamburgers and cheeseburgers. The number of cheeseburgers sold was two times the number of hamburgers sold how many hamburgers were sold on thursday?
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Question 1147925: An airplane takes
3
3 hours to travel a distance of
1920
1920 miles with the wind. The return trip takes
4
4 hours against the wind. Find the speed of the plane in still air and the speed of the wind.

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Question 1147925: An airplane takes
3
3 hours to travel a distance of
1920
1920 miles with the wind. The return trip takes
4
4 hours against the wind. Find the speed of the plane in still air and the speed of the wind.

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Question 1147938: Given the following system of equations, what positive value of k would make the lines below parallel? kx+2y=8 and 18x+ky=12
Thank you!

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Question 1147938: Given the following system of equations, what positive value of k would make the lines below parallel? kx+2y=8 and 18x+ky=12
Thank you!

Click here to see answer by greenestamps(13200) About Me 
Question 1147938: Given the following system of equations, what positive value of k would make the lines below parallel? kx+2y=8 and 18x+ky=12
Thank you!

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Question 1148028: Solve the following linear programming problem. Restrict
x ≥ 0
and
y ≥ 0.
Minimize
g = 9x + 8y
subject to the following.
5x + 2y ≥ 16
3x + 7y ≥ 27

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Question 1148028: Solve the following linear programming problem. Restrict
x ≥ 0
and
y ≥ 0.
Minimize
g = 9x + 8y
subject to the following.
5x + 2y ≥ 16
3x + 7y ≥ 27

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Question 1148251: 4x+2y=8 16x-y=14
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Question 1148269: What is the solution of the system? Use substitution.
x = y + 2
8y = 7x - 9
z = 6x - 4y

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Question 1148268: What is the solution of the system? Use substitution.
x = y + 2
8y = 7x - 9
z = 6x - 4y

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Question 1148313: A rectangular solid has a base with a length of 8cm and a width of 5cm. If the volume of the solid is 120cm to the 3rd power, find the height of the solid.
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Question 1148406: write a linear function f with f(-2)=6 and f(0)=-4
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Question 1148607: In a particular​ year, a total of 41 comma 367 students studied in two of the most popular host countries when traveling abroad. If 8629 more students studied in the most popular host country than in the second most popular host​ country, find how many students studied abroad in each country.
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Question 1148607: In a particular​ year, a total of 41 comma 367 students studied in two of the most popular host countries when traveling abroad. If 8629 more students studied in the most popular host country than in the second most popular host​ country, find how many students studied abroad in each country.
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Question 1148751: A 2000 seat theater has tickets for sale at $15 and $22. how many tickets should be sold at each price for a sellout performance to generate a total revenue of $33,500?
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Question 1148920: How do I solve:-5x+y-4z=60 How do I solve: -2x+5y+3z=-25
in variables 2x+4y+3z=-12 in variables -4x-3y-8z=-39
of three 6x-3y-2z=-52 of three 6x+8y-5z=14
How do I solve:-2x+15y+z=44 How do I solve: 8x+3y+z=43
in variables 4x+3y+3z=18 in variables -3x+5y+2z=32
of three -3+6y-z=8 of three 5x-2y+5z=24

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Question 1148989: solve each system of equations in 4 different ways, find the solutions(point of intersection).
A) y=x+5
y=2x-6
B) Y=X+5
Y=-X-7

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Question 1148989: solve each system of equations in 4 different ways, find the solutions(point of intersection).
A) y=x+5
y=2x-6
B) Y=X+5
Y=-X-7

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Question 1149152: a person plans to invest twice as much money in a LaSalle bank cd account at 2.5% annual interest as in Franklin's strategic mortgage account at 8% annual interest. how much should the person invest in each account so that the total interest for one year will be $650?
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Question 1149259: A family has two cars. The first car has a fuel efficiency of 40 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. During one particular week, the two cars went a combined total of 1600 miles, for a total gas consumption of 65 gallons. How many gallons were consumed by each of the two cars that week?
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Question 1149424: A chemical company makes two brands of antifreeze. The first brand is 35% pure antifreeze, and the second brand is 60% pure antifreeze. In order to obtain 160 gallons of a mixture that contains 45% pure antifreeze, how many gallons of each brand of antifreeze must be used?
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Question 1149424: A chemical company makes two brands of antifreeze. The first brand is 35% pure antifreeze, and the second brand is 60% pure antifreeze. In order to obtain 160 gallons of a mixture that contains 45% pure antifreeze, how many gallons of each brand of antifreeze must be used?
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Question 1149427: A scientist mixes water (containing no salt) with a solution that contains 30% salt. She wants to obtain 150 ounces of a mixture that is 20% salt. How many ounces of water and how many ounces of the 30% salt solution should she use?

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Question 1149438: At the local convenience store, 7 bags of chips and 3 containers of dip cost $33. However, 3 bags of chips
and 4 containers of dip cost $25. What is the cost of one bag of chips and one container of dip?

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Question 1149813: A car dealer stocks mid-size and full size cars on her lot, which holds 60 cars. On the average, she borrows $13,000 to purchase a mid-size car and $18,000 to purchase a full size car. How many cars of each type could she stock if her total debt is 1 million. How many cars of each type could she stock if her total debt is 1 million? Set up and solve a system using either elimination or substitution.
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Question 1149882: Which one has a greater rate of change? Negative 8X plus 2Y equals 16 or -10 X plus 5Y equals 15
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Question 1149922: Do the equations 4x−6y=10 and 6x−12y=15 graph as the same line?
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Question 1149922: Do the equations 4x−6y=10 and 6x−12y=15 graph as the same line?
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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