# 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 69951: write an equation that satisfies the given conditions. perpendicular to y=2x+7, through (0,0) Click here to see answer by checkley75(3666)

 Question 69998: Hey! Thanks for any and all help you can provide. The following problem is one that was given by a professor during the study of slopes and linear equations but I cannot figure out the connection. The questions are below: 1. The price of microsoft stock can be modeled by p=0.3688+43.99. Describe the input and output of function p. 2. The total chapter 12 bankruptcy filing between 1996 and 2000 can be modeled by b=83.9+106.3. What is the rate of change of the number of bankrutcy filings? Again, thanks for the help! Click here to see answer by Earlsdon(6287)

 Question 70032: I need help with the equation. The sum of three numbers is 47. Three times the smallest number is nine more than the largest number. Two times the middle number is one more than the sum of the other two numbers. Find the three numbers. Click here to see answer by Earlsdon(6287)

 Question 70052: Can someone please show me the step by step process in solving this type of problem? Thanks a bunch. Terri Hoelker invested some money at 3.5% simple interest, and \$5000 more than 3 times this amount at 4%. She earned \$1440 in interest. How much did she invest at each rate? Click here to see answer by ptaylor(2048)

 Question 70101: Please solve the following word problem: Bob invested \$20,000, part at 14% and part at 13%. If the total interest at the end of the year is \$2,720, how much did he invest at 14%? Click here to see answer by stanbon(57399)
 Question 70101: Please solve the following word problem: Bob invested \$20,000, part at 14% and part at 13%. If the total interest at the end of the year is \$2,720, how much did he invest at 14%? Click here to see answer by ptaylor(2048)
 Question 70101: Please solve the following word problem: Bob invested \$20,000, part at 14% and part at 13%. If the total interest at the end of the year is \$2,720, how much did he invest at 14%? Click here to see answer by bucky(2189)

 Question 70136: Could you please help me solve the following problem and please show me the steps on how to solve it? Thank you so much - I greatly appreciate the help that you provide! The problem is: -[3x-(2x + 5)] = -4-[3(2x-4)-3x] Click here to see answer by stanbon(57399)

 Question 70193: WRITE EQUATION IN STANDARD FORM: Y-2= -2/5 (X-8) Click here to see answer by stanbon(57399)

 Question 70195: WRITE EQUATION IN STANDARD FORM: Y-2= -2/5 (X-8) Click here to see answer by stanbon(57399)

 Question 70199: writing equation in standard form? y+2= -3/4 (x+1) Click here to see answer by Edwin McCravy(8912)

 Question 70224: when a system of two graphed lines are parallel, the system has___________ solution(s). Click here to see answer by jim_thompson5910(28598)

 Question 70237: -5x+3y = 11 3x+2y = -21 i have gotten the answer from the solver, but i am lost on working out the problem since the solver doesnt show all the work.. can you please finish the problem showing all the work so i can try and follow. thank you Click here to see answer by jim_thompson5910(28598)

 Question 70256: write equation in slope intercept form y+1=-7 (x+1) Click here to see answer by checkley75(3666)

 Question 70255: write the equation in slope intercept form y+2=4(x+2) Click here to see answer by checkley75(3666)

 Question 70287: An airplane flew for 6 hours with a 22-km/h tail wind. The return flight against the same wind took 8 hours. Find the speed of the plane in still air. Click here to see answer by checkley75(3666)

 Question 70282: A room is 1.5 times long as it is wide and its perimeter is 25 meters. find the dimension of the room? Click here to see answer by bucky(2189)

 Question 70309: Find the midpoint: this is what I don't understand (0,0) and (-6,8) (-3,5) and (3,-3) Click here to see answer by stanbon(57399)
 Question 70309: Find the midpoint: this is what I don't understand (0,0) and (-6,8) (-3,5) and (3,-3) Click here to see answer by checkley75(3666)

 Question 70226: When a system of two graphed lines are parallel, the system has_______solution(s), and the equations are said to be___________. Click here to see answer by 303795(595)

 Question 70526: Would someone please show me how to work this problem using the distribute property process. Thanks! Two tractor trailers leave from the same point at the same time, traveling in opposite directions. One averages 52 miles per hour, and the other averages 10 miles per hour slower. In how many hours will they be 282 miles apart? Click here to see answer by checkley75(3666)

 Question 70527: Please show me the process to use to work this problem using the distribution property process. thanks for your help! Michael McGinnis invested some money at 7% and \$4000 less than this amount at 5%. He earned \$520 interest the first year. How much did he invest at 5%? Click here to see answer by checkley75(3666)

 Question 70491: I'm having trouble with 7.3 solving linear systems by linear combination. Click here to see answer by funmath(2925)

 Question 70538: Mr. flores is tiling the kitchen counter for his wife. She wants a pattern with decorative tiles mixed in with plain tiles. the plain tiles cost 60 cents a piece, and the decorative tiles cost \$1.30 a piece. They budgeted \$300.00 for the tile, and the job will require 430 tiles in all. What is the most number of decorative tiles that Mr. Flores can buy and still stay within budget? Click here to see answer by stanbon(57399)

 Question 70551: using the substitution method how would you solve this problem b=a-2 b=1 Click here to see answer by checkley75(3666)

 Question 70590: I'm trying to help my son with some highschool algebra. I am wondering if you can explain two problems 2x=4y 6+y=8 The question is determine whether each equation is a linear equation, if so write it in standaard form. Please help Click here to see answer by checkley75(3666)

 Question 70568: b/4+7=53....I know the steps but dont really understand how to solve. math handout Click here to see answer by checkley75(3666)

 Question 70576: how do you solve: r + s + 2t - u = -3 2r + 3s + 3t + u = 2 4r + 2s - t + u = 5 s + 2t + 2u =7 Click here to see answer by Edwin McCravy(8912)