Tutors Answer Your Questions about Linear-systems (FREE)
Question 84336: Please help with solution and how obtained for this question.
One printing shop charges $5 plus $0.02 per page and a second shop charges $7 plus $0.015 per page. If __________ pages are printed, the total cost is less for the first printing shop.
A. less than 1500
B. less than 2100
C. less than 400
D. less than 900
Click here to see answer by tutor_paul(519)   |
Question 84336: Please help with solution and how obtained for this question.
One printing shop charges $5 plus $0.02 per page and a second shop charges $7 plus $0.015 per page. If __________ pages are printed, the total cost is less for the first printing shop.
A. less than 1500
B. less than 2100
C. less than 400
D. less than 900
Click here to see answer by bucky(2189) |
Question 84625: The supply equation is Y= 28X + 2025 and the demand equation is Y= -17X + 6120. The equilibrium demand is
A. 45
B. 4573
C. 2025
D. 91
I figured this problem and came up with the values of X = 91 and Y = 4573. Both of these answers are listed above. Which one is the equilibrium demand?, or do I have to continue figuring further to get another answer?? PLEASE assist.
Click here to see answer by vertciel(183) |
Question 84493: can you haelp me solve the system of equations. using the Gaussian elimination qith back substitution or gauss-jordan elimination
x+5y= 0
x+6y+z=1
-2x-y-z=-41
can you break it down to me on how to solve problems of this type
Click here to see answer by vertciel(183) |
Question 84803: 2) In most businesses, increasing prices of products can negatively impact the number of customers. A bus company in a small town has an average number of riders of 800 per day. The bus company charges $2.25 for a ride. They conducted a survey of their customers and found that they will lose approximately 40 customers per day for each $.25 increase in fare.
a) Let the number of riders be a function of the fare charged. Graph the function, identify the graph of the function (line, parabola, hyperbola, or exponential), and find the slope of the graph.
b) The bus company has determined that even if they set the price very low, there is a maximum number of riders permitted each day. If the price is $0 (free), how many riders are permitted each day?
c) If the bus company sets the price too high, no one will be willing to ride the bus. Beginning at what ticket price will no one be willing to ride the bus?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 84868: Systems of Linear Equations help please?!?!?
16:
3x - 2y = 12
7x + 2y = 8
(3, 2)
(2, -3)
(-2, 1)
17:
3x + 5y = 15
6x + 10y = -30
(1, -1)
an infinite number of solutions
no solution
18:
y = x - 4
x + 3y = 12
(1, -2/3)
(-1, 2)
(6, 2)
19:
3x - y = 7
2x + 3y = 1
(2, -1)
(2, -3)
an infinite number of solutions
Click here to see answer by jim_thompson5910(35256) |
Question 85030: A home-based company produces both hand-knitted scarves and sweaters. The scarves take 2 hours of labor to produce, and the sweaters take 14 hours. The labor available is limited to 40 hours per week, and the total production capacity is 5 items per week. Write a system of inequalities representing this situation, where x is the number of scarves and y is the number of sweaters. Then graph the system of inequalities.
Click here to see answer by jim_thompson5910(35256) |
Question 85483: The question is, find the average rate of change from f from -2 to 2. What is the average rate of change of f from x1 to x2, where x1 and x2 are distinct real numbers?
f(x) = -1/4x
I cannot figure out what the question is looking for, any tips?
Click here to see answer by stanbon(75887) |
Question 85491: Here's a question that has myself and my classmates getting all kinds of answers
See what you come up with:
Sove the equation for y. Write the answer int he form y=mx +b, where m and b are real numbers.
1/2x + 1/4y = 4
Click here to see answer by stanbon(75887) |
Question 85531: 2x+y=2
4x+y=4
If you multiply one of these by -1, the Ys will cancel, enabling you to solve it for x:
-1(2x + y = 2) --> -2x - y = -2
4x + y = 4 --> 4x + y = 4
-----------
2x = 2
x = 1
Now plug 1 in for x into either of the original equations to get y:
2(1) + y = 2 [using the first eqution]
2 + y = 2
y = 0
The solutoin is (1 , 0)
Click here to see answer by scianci(186) |
Question 85528: two trees and ash and an oak, grew together side by side in the forest. Over the years the ash grew to be one and a quarter times as high as the oak. One day the woodcutter came along and lopped 3 meters off the height of both trees and now the ash is one and a third times the height of the oak. How high was the ash originally
Click here to see answer by stanbon(75887) |
Question 85597: This problem is driving me nuts.
******
The math score on an exam can be written as:
S=200 + 20R - 5W, where S is the score, R is the number of correct answers and W is the number of wrong answers.
Dana's score on the test was 525 and he answered 19 questions correctly. How many did he answer incorrectly?
*******
I know the answer to be 11, but I can't figure out how it was solved!!!!!!!!!!!!!
Please help.
Click here to see answer by dolly(163) |
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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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