Tutors Answer Your Questions about Linear-systems (FREE)
Question 898517: A health-food store sells trail mix made with granola and dried fruit. Th e store
buys granola at $1.00/lb and dried fruit at $2.00/lb, and it sells these items at a
25% markup. If the trail mix sells for $1.75/lb, what is the recipe for trail mix?
Click here to see answer by josgarithmetic(39617)  |
Question 899030: solve following system by elimination:(addition)
4x-y=3
2x+3y=19
I got 4x -y =3
-4x -6y=-38
I know the 4x and -4x gets canceled, so do i get -7y=-34 and then y=-27 and plug it like 4x-(-27)=3? Not sure if I am doing this right.
Thanks in advance
Click here to see answer by Fombitz(32388)  |
Question 899624: I have to solve for x and y and graph it but please just show me how to find the x and the y.
2x-2y=4
y-x=6
I am honestly so confused on how to do this so please try to explain how you solved the answer in details with work shown.
Click here to see answer by ewatrrr(24785)  |
Question 897391: Sarah Meeham blends coffee for tasti delight. she needs to prepare 140 pounds of blended coffee beans selling for $4.50 per pund. She plans to do thid by blending together a hig-quality bean costing $5.50 per pound and a chaper bean at $3.50 per pound. To the nearest pound, find how much high-quality coffee bean and how much cheaper coffee bean she should blend
Click here to see answer by richwmiller(17219)  |
Question 900485: Can you help me Please. Find R if a=7, b=3, c=2, d=4 and e=5: R = a + 2b + 5c + d + 2e. The book says the answer is R = 33. I get R = 37. Here is how I solved the problem.
7 (1) + 3 (2) + 2 (5) + 4 + 5 (2) simplify that
7 + 6 + 10 + 4 + 10. Multiply R = 37
The book says should be R = 33. What am I doing wrong. Is the book have a typo error. If this works out im looking for a tutor with math. Thank you for your time.
Click here to see answer by ewatrrr(24785) |
Question 900485: Can you help me Please. Find R if a=7, b=3, c=2, d=4 and e=5: R = a + 2b + 5c + d + 2e. The book says the answer is R = 33. I get R = 37. Here is how I solved the problem.
7 (1) + 3 (2) + 2 (5) + 4 + 5 (2) simplify that
7 + 6 + 10 + 4 + 10. Multiply R = 37
The book says should be R = 33. What am I doing wrong. Is the book have a typo error. If this works out im looking for a tutor with math. Thank you for your time.
Click here to see answer by richwmiller(17219) |
Question 900265: a man and his dog running on a straight beach.at a given point in time the dog is 12m from his owner who starting in a direction perpendicular to the beach with a certain constant speed. the dog runs twice as fast and always to wards his owner where do the man and his dog meet?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 693201: Loan Balance: $9,440.00
Adjusted Loan Balance: $9,440.00
Loan Interest Rate: 3.50%
Loan Fees: 0.00%
Loan Term: 10 years
Minimum Payment: $50.00
Enrollment Status: In Repayment
Degree Program: Bachelor's Degree
Monthly Loan Payment: $93.35
Number of Payments: 120
Cumulative Payments: $11,201.75
Total Interest Paid: $1,761.75
2.Write a linear equation describing your monthly student loan balance.
3.Make a table of values describing the monthly loan balance for six months
Click here to see answer by ccallaway(1) |
Question 901437: Formulate a system of equations for the situation below and solve.
A private investment club has $400,000 earmarked for investment in stocks. To arrive at an acceptable overall level of risk, the stocks that management is considering have been classified into three categories: high-risk, medium-risk, and low-risk. Management estimates that high-risk stocks will have a rate of return of 13%/year; medium-risk stocks, 10%/year; and low-risk stocks, 7%/year. The members have decided that the investment in low-risk stocks should be equal to the sum of the investments in the stocks of the other two categories. Determine how much the club should invest in each type of stock if the investment goal is to have a return of $37,600/year on the total investment. (Assume that all the money available for investment is invested.)
Click here to see answer by richwmiller(17219) |
Question 901429: Formulate a system of equations for the situation below and solve.
The Johnson Farm has 400 acres of land allotted for cultivating corn and wheat. The cost of cultivating corn and wheat (including seeds and labor) is $48 and $36 per acre, respectively. Jacob Johnson has $18,600 available for cultivating these crops. If he wishes to use all the allotted land and his entire budget for cultivating these two crops, how many acres of each crop should he plant?
Click here to see answer by richwmiller(17219) |
Question 901445: Solve the system of linear equations, using the Gauss-Jordan elimination method. (If there is no solution, enter NO SOLUTION. If there are infinitely many solutions, express your answer in terms of the parameters t and/or s.)
x + y − 2z = −1
2x − y + 3z = 6
x − 2y + 5z = 4
Click here to see answer by richwmiller(17219) |
Question 901710: Solve equation by using algebra
3x^2-18x-48=0
Not sure how to start, if using quadratic formula right away or do i have to do something before. Can you please show me the steps to solve.
Thanks in advance.
Click here to see answer by harpazo(655)  |
Question 902070: The sum of the digits of a three digit number is 13. When 11 is subtracted from the sum of the hundreds digit and tens digit, the answer is equal to the units digit. Additionally, when the digits are reversed, the new value is 495 less than the original number.
Click here to see answer by Edwin McCravy(20056)  |
Question 902131: How would I set up and solve this equation? Please show all your work
You are going to make and sell bread. A loaf of Irish soda bread is made with 2 c flour and 1/4 c sugar. Kugelhopf cake is made with 4 c flour and 1 c sugar. You will make a profit of $1.50 on each loaf of Irish soda bread and a profit of $4.00 of of Kugelhopf. You have 16 c flour and 3 c sugar. How many of each kind of bread should you make to maximize the profit? What is the maximum profit?
So far I know P=1.50x + 4y
.25x+1y≤3
2x+4y≤16
I dont know what to do after please help
Click here to see answer by Theo(13342)  |
Question 902189: Suppose a company total cost and total revenue for product is:
C(x)=15,000+35x+0.1x^2
R(x)= 285x-0.9x^2
1. Find the profit function and simplify the result
Is it R=C to get the profit? So do i put the equation like 285x-0.9x^2=15000+35x+0.1x^2 in order to solve this?
Thanks
Click here to see answer by ewatrrr(24785) |
Question 902359: A merchant plans to sell two models of compact disc players at costs of $250 and $400. The $250 models yields a profit of $45, and the $400 model yields a profit of $50. He merchant estimates that the total monthly demand will not exceed 250 units. The merchant does not want to invest more than $70,000 in inventory for these products. Find the number of units of each model that should be stocked in order to maximize profit.
So far I have the constraints
P=250x+400x<=70,000
x+y<=250
x=>0
y=>0
Also how do I make this "The $250 models yields a profit of $45, and the $400 model yields a profit of $50" into an equation? Please show all your work I really need to understand this.
Click here to see answer by stanbon(75887) |
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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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