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

Algebra ->  Algebra  -> Coordinate Systems and Linear Equations  -> Lessons  -> Linear Equations Lesson -> Questions on Algebra: Systems of Linear Equations answered by real tutors!      Log On

 Ad: You enter your algebra equation or inequality - Algebrator solves it step-by-step while providing clear explanations. Free on-line demo . Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 551780: By graphing the function on your calculator (TI-83) find the solutions of 1.2x^2 - 3.1x -4.5=0 to three decimal places. Explain how answer was obtained. Click here to see answer by Edwin McCravy(8999)

 Question 551787: Thank you for your help. I would like to know how to use the calculator to do this. By graphing the function on your calculator (TI-83) find the solutions of 1.2x^2 - 3.1x -4.5=0 to three decimal places. Explain how answer was obtained. Click here to see answer by Edwin McCravy(8999)

 Question 551791: Solve 16 + 3 =5 ________________ x+5 x-2 Click here to see answer by Alan3354(31532)

 Question 551788: Janie's Crafts produces bracelets. The weekly profit the company receives for selling x bracelets is given by P9x)= -0.01x^2 + 50x - 30,000; P(x) is the profit. Because you cannot sell a negative number of bracelets, for the following questions only consider the function for x> 0. Use your graphing calculator to graph P(x), where you should consider a y window size around + 40,000. (T83) hOW MANY BRACELETS NEED TO BE MADE TO MAXIMIZE PROFIT? What is the max profit? Click here to see answer by richard1234(5390)

 Question 551996: Solve each of these systems using the substitution method. 2x + 3y = -4 x - 2y = 5 Any help will be Greatly Appreciated! Click here to see answer by 10301650(32)

 Question 552489: Arnel invest some of his savings at 4 percent per year and an equal amount at 7 percent per year.His income totals ₱33 000 a year.How much did Rico invest at each rate? Click here to see answer by JBarnum(2044)

 Question 552628: Algebra: How would you plot the second line and why would you plot it like that is there a rule? X -> 3X+2 -2 = -4 -1 = -1 0 = 2 1 = 5 2 = 8 I get that the first number line will have -2,-1,0,1,2 on it but what about the 2nd one? Click here to see answer by jim_thompson5910(28717)

 Question 552787: 13. Write the slope-intercept equation for the line that passes through (-5, -8) and is perpendicular to 10x – 6y = -11. Click here to see answer by mananth(12270)

 Question 552815: how do system of equations using substitution x+y=4 2x+3y=9 Click here to see answer by jim_thompson5910(28717)

 Question 552820: Need to know how to work out this problem! 3x+y=8 -2x-y=6 Click here to see answer by mananth(12270)
 Question 552820: Need to know how to work out this problem! 3x+y=8 -2x-y=6 Click here to see answer by Alan3354(31532)

 Question 552831: I have homework for Algebra. I tried everything I know how to do. Can you help by showing me how to do it? The problem is -.3x+y=.5 , .5x-.3y=1.9 I know the answer because it was given to me by the yeacher. I just have to show how to do it. Please help!!!!! Click here to see answer by stanbon(57969)

 Question 553397: How do you put 3y=18=-8x+3 in slope intercept form ? can you please tell me in details how you got the answer. thank you soooooo much for your time Click here to see answer by mananth(12270)

 Question 553405: Good evening , I need to know how to put this equation : 3y+18=-8x+3 in slope-intercept form. Can you please put in detailed information how you put it in slope intercept form . Click here to see answer by Alan3354(31532)

 Question 553637: Use either elimination or substitution to find the solutions (if any) Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection y = 2x + 3 and y = -x – 4 Click here to see answer by mananth(12270)

 Question 553664: peter decides to mix grades of gasoline in his truck. he puts in 12 gallons of regular and 7 gallons of premium for a total cost of \$48.21. If premium gas cost .21 cents more per gallon, what was the price of each grade of gasoline? Click here to see answer by josmiceli(9817)
 Question 553664: peter decides to mix grades of gasoline in his truck. he puts in 12 gallons of regular and 7 gallons of premium for a total cost of \$48.21. If premium gas cost .21 cents more per gallon, what was the price of each grade of gasoline? Click here to see answer by mananth(12270)

 Question 553677: find the equation of a line whose intercepts are twice of the line 3x-2y-12=0 Click here to see answer by mananth(12270)

 Question 553875: Please help me solve the below: Bruce has \$5.15 in dimes and quarters. He has 8 more quarters than dimes. How many quarters does he have ?? thank you !!!!! (HS Freshman struggling in Algebra) Click here to see answer by TutorDelphia(193)

 Question 553899: 3x-y=7 9x-3y=21 i can use any method and i would like easy steps thanks Click here to see answer by Alan3354(31532)

 Question 554059: need help solving linear equation blow: x=2y=4 3x-y=5 Click here to see answer by Alan3354(31532)

 Question 554181: 5 rolls + 30 balloons cost \$18.60 What is the cost of each roll and each balloon? Click here to see answer by stanbon(57969)

 Question 554196: How many solutions does the system y=-7x+3 and y+7x=10 have? Click here to see answer by saifoo.khan(162)

 Question 554120: Eight years ago, Albert was 3/4 of Bilbos age. in 22 years he will be 9/10 of Bilbos age. How old is Bilbo now? Click here to see answer by ankor@dixie-net.com(15746)

 Question 554302: Which variable would you isolate in order to solve the system below by substitution? 8x - y = 11 3x + 4y = 18 Click here to see answer by Alan3354(31532)

 Question 554631: how do you solve the linear system? 2x+3y=14 -x+5y=19 Click here to see answer by Alan3354(31532)

 Question 554670: solve each system by substitution here is the problem: y=x-3 y=-2x+6 Click here to see answer by jim_thompson5910(28717)