# 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 294907: I need help solving this word problem we are to use a system of linear equations to solve the problem. Your teacher is giving you a test worth 100 points containing 40 questions. There are two-point questions and four-point questions on the test. How many of each type of question are on the test? Please help this is really important!! thanks Click here to see answer by richwmiller(9132)

 Question 294928: Where do these 2 lines intersect? -11x-11y=-22 -3.8x+1.4y=-9.7 We have tried and tried to figure it out, but can't seem to get it!! Thanks so much for your help!! Click here to see answer by richwmiller(9132)

 Question 294890: Translate to an algeraic expresssion. The product of 38% and some number. The translation is_________ Type the percentage as a deciomal.Use d to represent some number. Click here to see answer by checkley77(12569)

 Question 295001: If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. Solve using the substitution method. 3y + x = 4, x = 2y - 1 Click here to see answer by hmmimstuck(1)

 Question 295019: Find the intercepts for the equations. -4x + y = -4 Click here to see answer by PRMath(123)

 Question 295206: ordered pairs(x,y) of numbers that satisfy the equation x-3y=8 Click here to see answer by Alan3354(30928)
 Question 295206: ordered pairs(x,y) of numbers that satisfy the equation x-3y=8 Click here to see answer by richwmiller(9132)

 Question 295306: Solve the problem by using two equations with two variables: A twin-engined aircraft can fly 864 miles from city A to city B in 3 hours with the wind and make the return trip in 8 hours against the wind. What is the speed of the wind? I just need help setting up the equations, then i can solve fine, but word problems are not my strong point...please help. Click here to see answer by scott8148(6628)

 Question 295416: Find an equation of the line containing the given pair of points. Write your final answer in slope-intercept form. ( -5, 6) and ( -8, 8) Click here to see answer by richwmiller(9132)

 Question 295415: Find an equation of the line having the specified slope and containing the indicated point. Write your answer in slope-intercept form. m = -3; (- 7, 6) Click here to see answer by checkley77(12569)

 Question 295493: Determine the x- and y- intercepts ( if any) of the given equation. Show your work. Then plot the intercepts, and graph the line. y = 3/2x -2 Click here to see answer by edjones(7569)

 Question 295557: Solve using either elimination or substitution. Show your work. If the system has either no solution or an infinite number of solutions, state this. 16x-15y=-10 11x-7y=13 Click here to see answer by edjones(7569)

 Question 295627: I hope someone can help... I have submitted 2 questions in the past any no one has replied. my questions is; Find the values of X and Y that solve the following system of equations: 2x-9y=-21 -3x-7y=11 So far this is what i have done; -6x-27y=63 6x-14y=23 13y/13 = 41/13 y=41/13 2x-9y=-21 2x-9(41/13)=-21 ...now what??? help, not sure how to solve with fraction Click here to see answer by palanisamy(496)

 Question 295630: what is the x and y intercepts for the equation y=x-1 Click here to see answer by palanisamy(496)

 Question 295666: Graph the line y-4=0(x+3) Click here to see answer by richwmiller(9132)

 Question 295563: Solve using elimination method. 2x+ 8y = 26 5x- 7y = -16 Click here to see answer by faceoff57(82)

 Question 295732: what is the slope of the line y=9? Click here to see answer by jim_thompson5910(28476)
 Question 295732: what is the slope of the line y=9? Click here to see answer by PRMath(123)

 Question 295702: Please translate the problem into a pair of linear equations in two vaiables. Solve the equations using either elimination or substitution and state the answer for both variables. The difference of two numbers is 88. The second number is 20% of the first number. What are the numbers? Thank you! Click here to see answer by Fombitz(13828)

 Question 295760: Solve (2x - 1)^2 = 20 Show every step Click here to see answer by JBarnum(2044)

 Question 295800: 5z-2y=-1 Y intercept is -1 x is the rise is 2 and the run is 1 so go up 2 and ove 1 and you will reach the x axis. do same for line 2 Click here to see answer by richwmiller(9132)
 Question 295800: 5z-2y=-1 Y intercept is -1 x is the rise is 2 and the run is 1 so go up 2 and ove 1 and you will reach the x axis. do same for line 2 Click here to see answer by miller95(1)

 Question 295807: Given the pair of linear equations in two variables: Find the x- and y-intercepts (if any) for each line. Plot those intercepts, and graph the two lines on the same chart. Apply elimination or substitution to find the coordinates of the point of intersection (if there are no solutions or infinite solutions, state this). x + 9y = 79 -7x + 9y = 23 Please and Thank you Click here to see answer by richwmiller(9132)

 Question 295804: Please translate the problem into a pair of linear equations in two vaiables. Solve the equations using either elimination or substitution. State your answer for the specified variable. A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 7% cement should he mix with 10 bags of 15.5% cement to produce a mix containing 12% cement? (Please help) Thanks!! Click here to see answer by richwmiller(9132)

 Question 295937: The question is.... 1/2x + 6 = 3 + 2x.... I know the answer is 2... but I need a visual step by step answer so that I can understand where the 2 came from.. I'm confused.. pleaseee help me.... sstep by step... Click here to see answer by jojo14344(1512)

 Question 295936: The question is.... 1/2 x + 6 = 2 + 2x..... I know the answer is 2... but please give it to me step by step ..... I would like it very visual so I can see where is the 2 coming from.. Click here to see answer by jojo14344(1512)

 Question 296136: Find any x-intercepts and the y-intercepts. If no x-intercepts exist, state this. g(x)=x^2-6x+9 Click here to see answer by persian52(158)

 Question 296145: The difference between two numbers is 8. If 3 times the larger number is equal to 4 times the smaller number, find both numbers. Click here to see answer by Deina(147)

 Question 296118: Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged \$135.00 for 3 days and 300 miles, while Mary was charged \$250.00 for 5 days and 600 miles. What does Best Rentals charge per day and per mile? Click here to see answer by mananth(12270)

 Question 296238: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 7x + 9y = -27 -2x - 7y= 21 Click here to see answer by richwmiller(9132)

 Question 296272: what is the solution to 7/2x+7/3y=42 , 1/4x+1/3y=4 Click here to see answer by richwmiller(9132)

 Question 296496: Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for both variables. The perimeter of a rectangle is 48 cm. The length is 12 cm longer than the width. Find the dimensions. Click here to see answer by richwmiller(9132)

 Question 296499: 7x + 9y = -27 -2x - 7y = 21 Solve using either elim. or sub. Click here to see answer by mananth(12270)

 Question 296507: 3x + y - Z=20 x + y +7z=24 i cant figure it out Click here to see answer by richwmiller(9132)

 Question 296767: Find the area of a triangle whose vertices have coordinates (0,9),(0,-4),(5,-4). I know to find the area of a triangel you use A= 1/2*b*h but how do you find out the base and hight? Click here to see answer by richwmiller(9132)

 Question 297205: What is the X and Y of the equation 5x+y=9 10x-7y=-18 by doing elimination? Click here to see answer by faceoff57(82)

 Question 297316: Suppose you have 60¢ and a 2 cm by 3 cm picture of a building that you want to enlarge as much as possible. Copies on a photocopy machine cost 10¢ and the machine can enlarge any image put through it to 120% of its original size. How large a picture of the building can you obtain? Thanks. Click here to see answer by Fombitz(13828)

 Question 297422: 2x + 4y = 8 Click here to see answer by checkley77(12569)

 Question 297543: The value, v, of a shopkeepeer's inventory software program is given by v= 1/2 t + 5, where t is the number of year's since the shoekeeper bought the program. What is the program worth 6 years after it is first purchased? Plot the point with the given t- value, 6. Click here to see answer by richwmiller(9132)

 Question 297490: Solve the system of equations. x+y+z=2 Click here to see answer by richwmiller(9132)

 Question 297631: solve this system for x and y (x+2/2)-(y-4/3)=4 (x+y/2)=(1/2)+(x-y/3) Click here to see answer by stanbon(57203)
 Question 297631: solve this system for x and y (x+2/2)-(y-4/3)=4 (x+y/2)=(1/2)+(x-y/3) Click here to see answer by richwmiller(9132)

 Question 297604: solve each system by graphing. 3x+2y=-6 x+3y=-2 Click here to see answer by Fombitz(13828)

 Question 297620: x-y=2 5x+3y=18 Click here to see answer by Fombitz(13828)

 Question 297761: x=-10+y -7x-3y=20 Click here to see answer by user_dude2008(1861)

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