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

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 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 91052: I got this one wrong, can anyone enlighten me on how to do it? A circus clown at the top of a 60 foot platform is playing catch with another clown on the ground. The clown on the platform drops a ball at the same time as the one on the ground tosses a ball upward at 80 ft/sec. For what length of time is the distance between the balls less than or equal to 10 feet? Click here to see answer by kev82(148)

 Question 91078: Tickets for and event cost \$4 for children, \$12 for adults, and \$10 for senior citizens. The total ticket sales were \$2160. There were 60 more adult tickets than child tickets, and the number of senior citizens tickets were 2 times the number of child tickets. How many of each tickets were sold? Thanks in advance Click here to see answer by Earlsdon(6287)

 Question 91141: I got this wrong, and the instructor did not explain why. Can you enlighten me? There are 385 surfers at Surf City. 2/3 were boys and 1/12 were girls. If there are 2 girls for every boy, how many boys and how many girls are there in Surf City? I got 385(.66) = 130.90 1/12(2)(385)=247 That only equals 377 in lieu of the 385 Click here to see answer by checkley71(8403)

 Question 91050: I got this wrong, can someone help walk me through how these are done. I hate word problems. Missed 6 of them. Combined population of City A and City b was 25,000 in 1990. By 1995, the population of city a increased 10% and city b increased 9%. Total population increased by 2380 people, so what was the population in 1990? Click here to see answer by ankor@dixie-net.com(15649)

 Question 91338: Are the sets of lines parallel, perpendicular, or neither: Line 1 is through (-4,-7) and (1,3) and Line 2 is through (2,6) and (4,10) Thanks in advance Click here to see answer by Earlsdon(6287)

 Question 91352: Line 1 is equation x - 4y = 12 and line 2 is equation 4x +y=4. Are they parallel perpendicular or neither. Click here to see answer by tutor_paul(490)

 Question 91350: Line 1 is through (9,2) and (3,-8) and Line 2 is through (-3,5) and (5,-1) Are they perpendicular parallel or neither. Thanks in advance. Click here to see answer by jim_thompson5910(28593)

 Question 91447: rewrite the equation as a function of x 4x - 10y = 11. thank you Click here to see answer by bucky(2189)

 Question 91446: rewrite the equation as a function of x: -5x-6y=-12.Thank you Click here to see answer by checkley71(8403)

 Question 91455: solve by addition or substitution. 20x-5y=-12 and y = 4x+3. If anyone can help, I would be so grateful. Click here to see answer by checkley71(8403)

 Question 91454: My dear friends, if anyone can help I would be so grateful. Solve by substitution x+5y=0 -2x-4y=6 Thanks. Click here to see answer by checkley71(8403)

 Question 91453: Lane invested \$14000 part at 15% and part at 2%. If the total interest at the end of the year is \$1060 how much did she invest at 15%. My dear friends, if anyone can help I would be so grateful. Click here to see answer by checkley71(8403)

 Question 91445: write the equation of the line wuth x intercept (12,0) and y intercept (0,-2). Thank you. Click here to see answer by checkley71(8403)

 Question 91444: write the equations of the lines passing through (6,-10) and (6,-6). Thanks in advance. Thank you. Click here to see answer by checkley71(8403)

 Question 91420: solve each of the following systems by addition. if a unique solution does not exist, state whether the system is inconsistent or dependent. x + 5y = 10 and -2x -10y = -20 Click here to see answer by jim_thompson5910(28593)

 Question 91417: find the value for m and b in the following system so that the solution to the sysytem is (-3, 4) 5x+7y =b and mx+y = 22 thank you for the help Click here to see answer by uma(370)

 Question 91418: solve each of the following sysytems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent. 2x + 3y =1 and 5x + 3y =16 Click here to see answer by ankor@dixie-net.com(15649)

 Question 91616: Solve by substitution x + 5y = 0 -2x -4y = 6 Got a test and I still can't grasp this. Any help is appreciated. Click here to see answer by stanbon(57337)
 Question 91616: Solve by substitution x + 5y = 0 -2x -4y = 6 Got a test and I still can't grasp this. Any help is appreciated. Click here to see answer by praseenakos@yahoo.com(507)

 Question 91617: Lane invested \$14000 part at 15% and part at 2%. If the total interest at the end of the year is \$1060, how much did she invest at 15%. Please help. What formula could I use? Click here to see answer by stanbon(57337)

 Question 91660: Solve for x: (x – 2)/5 – 3/2 = (x + 1)/10 I have tried this and came up with 3 1/2 or 3.5. When I replaced the x with this solution and worked out both sides, the answer on both sides of the = where different. I am stumped and even my sister who is 30 and just finished her algebra course could not figure it out. Please help me to figure out where to begin. Click here to see answer by ankor@dixie-net.com(15649)
 Question 91660: Solve for x: (x – 2)/5 – 3/2 = (x + 1)/10 I have tried this and came up with 3 1/2 or 3.5. When I replaced the x with this solution and worked out both sides, the answer on both sides of the = where different. I am stumped and even my sister who is 30 and just finished her algebra course could not figure it out. Please help me to figure out where to begin. Click here to see answer by josmiceli(9674)

 Question 91872: How do you change slope intercept equation like y=-3/4x+3 into a standard equation? Click here to see answer by stanbon(57337)

 Question 91933: this is part of my summer math work and i dont know how to solve it ... Click here to see answer by funmath(2925)

 Question 91980: I do not have a question from the book. I have a linear inequality of 5x + 10 y <= 100 Could you tell me how to graph this inequality? Thank you. Click here to see answer by mathispowerful(115)

 Question 91934: this is part of my summer math work and i dont know how to solve it ... i tried to use the solver on here but it doesnt explain HOW to get the answer. Click here to see answer by homeworkhelpanytime(21)
 Question 91934: this is part of my summer math work and i dont know how to solve it ... i tried to use the solver on here but it doesnt explain HOW to get the answer. Click here to see answer by jim_thompson5910(28593)

 Question 92089: Write an equation of a line passing thru (-4,2) perpendicular to -6x+5y=16 How do I set this problem up? Click here to see answer by jim_thompson5910(28593)

 Question 92112: if a line is horizontal,its slope is 1,0,underfined,negative Click here to see answer by stanbon(57337)

 Question 92107: I am sorry I do not have my book with me. I am not sure I am solving these two equations correctly could you please help? Solve each of the following systems by subtitution: 1st problem: 5x - 2y = -5 y - 5x = 3 2nd problem: 4x - 12y = 5 -x + 3y = -1 Thank you for your help. Click here to see answer by anraymer(35)

 Question 92143: How do you write this in standard form: (5, -3),y=4x+2? Click here to see answer by anraymer(35)

 Question 92405: Yuri has a board that is 98in. long. He wishes to cut the board into two pieces so that one piece will be 10in. longer than the other. What should the length of each piece be? Click here to see answer by checkley71(8403)

 Question 92404: another word problem The sum of two consecutive integers is 145. Find the two integers. Click here to see answer by checkley71(8403)

 Question 92403: Help to solve and figure out Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 20m, and the area is 224m2, i need t find the length of the other base . Word problems always gave me a hard time I really could not under stand them Click here to see answer by checkley71(8403)

 Question 92521: Ok, I answered this but I want to make sure that I got it right before turning it in. Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 Click here to see answer by jim_thompson5910(28593)
 Question 92521: Ok, I answered this but I want to make sure that I got it right before turning it in. Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 Click here to see answer by checkley71(8403)

 Question 92525: I am lost on this one Solve the system by addition or substitution. 20x – 5y = –12 y = 4x + 3 A) (3, 4) B) (-3, -4) C) (3, -4) D) Inconsistent system (No solution) Click here to see answer by jim_thompson5910(28593)

 Question 92526: I picked B as my answer but I am not sure... Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 A) 4/3, -1 B) -4/3, -1 C) 4/3, 1 D) -4/3, 1 Click here to see answer by jim_thompson5910(28593)

 Question 92527: Solve the system by substitution. x + 5y = 0 –2x – 4y = 6 A) (–5, -1) B) (5, 1) C) (–5, 1) D) (5, -1) I need help with the above question please. Click here to see answer by jim_thompson5910(28593)

 Question 92528: Solve the system by substitution. 3x – y = –7 x + y = –9 A) (–4, –5) B) (4, 5) C) (4, –5) D) (–4, 5) Sorry but I just do not understand these at all Click here to see answer by jim_thompson5910(28593)