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

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Question 990739: How do you simplify the quadratic 3x^2+3x-6=0 into 2 binomials?
Click here to see answer by Boreal(15235) About Me 
Question 990739: How do you simplify the quadratic 3x^2+3x-6=0 into 2 binomials?
Click here to see answer by MathLover1(20850) About Me 

Question 990672: Suppose a devastating freeze destroyed roughly 85% of California Central Valley's orange crop. As a result of the freeze, an orange that cost $0.50 before the freeze would cost $1.50 after the freeze. Model the price c of an orange as a linear function of the percentage p of the crop that was destroyed. (Hint: When 0% of the crop was destroyed, the price was $0.50.)
Click here to see answer by josgarithmetic(39617) About Me 

Question 990636: can you help me solve this please thanks?
x+y-z=0
2x-y+z=3
-x+5y-3z=2

Click here to see answer by solver91311(24713) About Me 

Question 990973: Please help me solve this equation: 2x+y=10
-2x+2y=-16

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

Question 990987: Is 9x+11zy=12y linear? And write it in standard form
Click here to see answer by Edwin McCravy(20056) About Me 

Question 990978: Please help me solve this equation: y=-2x+3
4x+2y=12

Click here to see answer by ikleyn(52786) About Me 

Question 990964: Please help me solve this equation: 3x+2y=25
x-3y=1

Click here to see answer by ikleyn(52786) About Me 

Question 991058: A gym charges a one time joining fee of $50 and then a monthly membership fee of $25.
Write a function to represent the situation and define the variables.

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Question 991350: 7x – 4y = –7
5x + y = 22

Click here to see answer by macston(5194) About Me 

Question 991496: Solve by elimination
2x-4y-z=8
3x+2y+z=6
5x-2y+3z=3

Click here to see answer by solver91311(24713) About Me 

Question 991371: What is the value of x and z when given the following degrees: (8x-3), 77 and z
Click here to see answer by Fombitz(32388) About Me 

Question 991488: The Community College basketball team made 51 field goals in a game, some were 2 pointers, and some were 3 pointers. They score 130 points. How many 2 point and 3 point baskets were made?
Click here to see answer by macston(5194) About Me 

Question 991747: Is 55y=8x+25 a equation?
Click here to see answer by Alan3354(69443) About Me 

Question 991842: The diameter of a sphere is reduced by 10%. By what percent will the volume be reduced?
Click here to see answer by Theo(13342) About Me 

Question 992238: Can you please help me. It is solving linear equations with fraction.
3/2x + 1/5= 3/4
My LCD is 20.
Thank you

Click here to see answer by macston(5194) About Me 

Question 992311: 3X + y = 1
5x + y = 1

Click here to see answer by Timnewman(323) About Me 

Question 992405: x+y=k
x-y=k
the solution to the system shown is
(0,k)
(2,2)
(k,0)

Click here to see answer by stanbon(75887) About Me 

Question 992422: Please help me solve
H%2B2%28H-6%29=18

Click here to see answer by solver91311(24713) About Me 

Question 992577: Please help me solve this hw question
Find a slope-intercept form equation for the line Through (3,3) with slope of -2/5

Click here to see answer by MathLover1(20850) About Me 
Question 992577: Please help me solve this hw question
Find a slope-intercept form equation for the line Through (3,3) with slope of -2/5

Click here to see answer by jim_thompson5910(35256) About Me 

Question 992946: What is the slope of 2y+1=0?
Click here to see answer by josgarithmetic(39617) About Me 

Question 993366: the cost of a gym membership includes the initial fee and a monthly fee. Find the initial and monthly fees if the total cost for 5 months is $225 and the total cost for 10 months is $375.
Click here to see answer by macston(5194) About Me 

Question 993486: I.M. Rich, distributes his fortune as follows and in this order:
- The first $5 million goes to my best friend, Sam, my dog;
- Half the remainder goes to my high school teacher;
- Then, I give $50 million to build a new hospital in town;
- Of the remaining amount, 50% goes to my wife, 40% to my daughter, 9% to my lawyer, and 1% to my lazy son.
All the son gets is $10,000
How much was I.M. Rich's fortune? Justify your answer
How much did each person receive?

Click here to see answer by macston(5194) About Me 

Question 993497: What is the slope of 15x+20y=2

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Question 993464: How do i solve. 2/3(k—9)= 4(k—19)
Click here to see answer by farohw(175) About Me 

Question 993548: What is the ordered pair for x+y=160 and x=4y+30

Click here to see answer by ikleyn(52786) About Me 

Question 993634: determined the quadratic function whose graph is given. the vertex is (3,-11) and the y-intercept is -2
Click here to see answer by MathLover1(20850) About Me 

Question 993698: Good morning or afternoon whichever time zone you are in. I have a question about a linear equation I would like to ask. The problem is:
x=7-4y
6x-5y=-45
My question is, with the equation x=7-4y, do I add 4y to both sides of the equation so it looks like x+4y=7, before continuing to solve the rest of the problem?

Click here to see answer by Fombitz(32388) About Me 

Question 994183: Caryssa makes bracelets to sell at craft fairs. The supplies she needed to start her business cost her $45. In addition, the supplies for each bracelet cost her $3. She sells her bracelets for $5. What is the minimum number of bracelets she must sell to make a profit.
2. Write an equation that Caryssa could use to determine her total cost, "C", for making "n" bracelets.
3. Write an equation that she could use to find the profit, "P", she makes from selling "n" bracelets.

Click here to see answer by solver91311(24713) About Me 

Question 994178: Carissa makes bracelets to sell at craft fairs. The supplies she needed to start her business cost her $45. In addition, the supplies for each bracelet cost her $3. She sells her bracelets for $5. What is the minimum number of bracelets she must sell to make a profit?
2. Write an equation that Carissa could use to determine her total cost, 'C', for making 'n' bracelets
3. Write an equation she could use to find the profit, 'P', she makes from selling 'n' bracelets

Click here to see answer by solver91311(24713) About Me 

Question 994172: Find four solutions of each equation. Write the solutions as ordered pairs. y=12
Click here to see answer by stanbon(75887) About Me 

Question 994169: how do I solve 4(y - 1) + 5(y + 2) = 3(y – 8)
Click here to see answer by MathLover1(20850) About Me 

Question 994380: I have been trying to solve the following linear equation
3X-5Y=11
2x-6y=2
I keep getting the wrong answer so when I checked with you guys I noticed that it was substituted with 2(11-5y)/3-6y=2
I understand the substitution part but how do I solve from here what does the / mean next to the 3 what operation I'm suppose to there, I'm confused please help.

Click here to see answer by Alan3354(69443) About Me 
Question 994380: I have been trying to solve the following linear equation
3X-5Y=11
2x-6y=2
I keep getting the wrong answer so when I checked with you guys I noticed that it was substituted with 2(11-5y)/3-6y=2
I understand the substitution part but how do I solve from here what does the / mean next to the 3 what operation I'm suppose to there, I'm confused please help.

Click here to see answer by rothauserc(4718) About Me 

Question 994564: The ordered pairs in each exercise are for the same direct variation. Find each missing value. (1,y) and (2/3,-9)
Your help is greatly appreciated! THANK YOU!

Click here to see answer by stanbon(75887) About Me 

Question 994607: what is the value of x in the solution of the system?
-3x-y+2z=7
2y+z=-5
3x+6y=-21
A.-4
B.3
C.-2
D.1

Click here to see answer by Fombitz(32388) About Me 

Question 994661:
(1 pt)

Solve the given system, using the substitution method.

y = 3x – 4
9x – 3y = 14




A.

There is no solution.


B.

(12, 14)


C.

(14, 12)


D.

There are an infinite number of solutions.

Click here to see answer by stanbon(75887) About Me 

Question 994700: An airplane travels 2310 miles in 3.5 hours with the aid of a tail wind. It takes 4 hours for the return trip, flying against the same wind. Find the speed of the airplane in the still wind, and the speed of the wind.
Click here to see answer by Alan3354(69443) About Me 

Question 994697: A movie theater charges $ 8 for adults and $ 6 for seniors. On a particular day when 344 people paid an admission, the total receipts were $ 2575. Round your answers to the nearest integers.
Click here to see answer by Boreal(15235) About Me 

Question 994780: Is point (4,5) part of the solution for 3x – 6y ≤ 30? Why or why not?
Click here to see answer by josgarithmetic(39617) About Me 

Question 995201: y=2x
y=-x+6

Click here to see answer by EdenWolf(517) About Me 

Question 995177: y=18x-9
-108x+6y=-54
Graph and describe consistent,dependent etc.

Click here to see answer by ikleyn(52786) About Me 

Question 995302: 25x5y=125,25x+4y=120
Click here to see answer by Alan3354(69443) About Me 

Question 995306: find the value of x
https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xpt1/v/t34.0-12/12092276_893469867356495_569616557_n.jpg?oh=cdf48ffd0021292a3a2617b7f36bcc5f&oe=5619455E&__gda__=1444502991_ff3b6bf0ae863790389193f5a1dedc0a

Click here to see answer by MathLover1(20850) About Me 

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