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 241740: One number is 6 more than another. The sum of the numbers is 30. Find the numbers. A coat cost 3 times as much as a pair of pants. Together they cost \$180. How much does each cost. Click here to see answer by College Student(505)

 Question 241749: solve each system of linear equations by using addition or elimination 8) 2x - y = -4 4x + y = 1 Click here to see answer by jim_thompson5910(28598)

 Question 241745: solve each system of linear equations by addition or elimination 2) 2x + y = 5 3x - 3y = 3 Click here to see answer by jim_thompson5910(28598)

 Question 241679: hi, i tried solving this system and it just confuses me so much. 1/a + 1/b - 2/c = 9 3/a - 2/b + 1/c + -1 2/a - 1/b + 3/c = 7 i tried modifying it to a + b - 2c = 9 3a - 2b + c = -1 2a - b + 3c + 7 i tried moving the variables into the numerator and switching the signs after i did that but it doesnt seem to work because i eliminated and substituted and the triplet i got was (65, 119, 29) so please help me Click here to see answer by scott8148(6628)
 Question 241679: hi, i tried solving this system and it just confuses me so much. 1/a + 1/b - 2/c = 9 3/a - 2/b + 1/c + -1 2/a - 1/b + 3/c = 7 i tried modifying it to a + b - 2c = 9 3a - 2b + c = -1 2a - b + 3c + 7 i tried moving the variables into the numerator and switching the signs after i did that but it doesnt seem to work because i eliminated and substituted and the triplet i got was (65, 119, 29) so please help me Click here to see answer by checkley77(12569)

 Question 241743: solve each system of linear equations by addition or elimination 1) 3x + y = 7 4x + 2y = 16 Click here to see answer by jim_thompson5910(28598)

 Question 241906: How do you solve for x in the equation x-480/105=1.6449 Click here to see answer by unlockmath(1603)

 Question 242210: what is y in 6x-7y=10 if your tring to write it out in y=mx+b form Click here to see answer by dpaulin(12)

 Question 242231: What is the solution to the system of equations shown? ( y=2x-6 & y=-3x-6) Click here to see answer by dpaulin(12)

 Question 242408: A rectangular lot whose perimeter is 460 feet is fenced along three sides. An expensive fencing along the lot's length costs \$19 per foot, and an inexpensive fencing along the two side widths costs \$8 per foot. The total cost of the fencing along the three sides comes to \$4130. What are the lot's dimensions? Click here to see answer by ankor@dixie-net.com(15659)

 Question 242477: at maximum speed airplan travel 2460 miles against the wind in 6 hours flying with the wind the plan can travel the same distance in 5 hours Click here to see answer by stanbon(57377)

 Question 242351: For spring break some students flew to cancun. From mexico city, the airplane took 2 hrs to fly 600 mi against a head wind. The return trip with the wind took 1 2/3 hr. Find the speed of the plane in still air. Click here to see answer by checkley77(12569)
 Question 242351: For spring break some students flew to cancun. From mexico city, the airplane took 2 hrs to fly 600 mi against a head wind. The return trip with the wind took 1 2/3 hr. Find the speed of the plane in still air. Click here to see answer by Alan3354(30993)

 Question 242828: solution to this linear equation 3x + 3 over 4 - 7x -6 over 2 = 1 Click here to see answer by nyc_function(2733)

 Question 243010: Find an equation in slope-intercept form if possible through (-8, 1), with undefined slope Click here to see answer by Alan3354(30993)

 Question 243004: heres my question its about finding x between jupiter and Io,using the equation x+300,000+400,000+800,000=4 3/4x moons orbit /Io europa ganymede callisto distance from jupiter ? ? ? ? can u help me with this sir/mom im having problem with this one i dont know how to find the x between those jupiter Click here to see answer by Alan3354(30993)

 Question 243361: Describe two real-life examples where linear equations are used at home. Describe them in detail. Click here to see answer by oberobic(2304)

 Question 243429: find the coordinates of the y-intercept for the given equation:y=x-13 and y=3x-7 Click here to see answer by checkley77(12569)

 Question 243390: 1. One number is 40 more than another. Find the number if the sum is 48. 2. The difference between 6 times a number and 12 equals the sum of the number and thirteen. Find the number. 3. One number exceeds another by 5. If the larger is increased by 5 and the smaller decreased by 8, the larger will be 12 less than twice the smaller. Find the original number. Click here to see answer by checkley77(12569)

 Question 243514: 8y=7+3x how to make in standard form Click here to see answer by College Student(505)

 Question 243674: without graphing, solve each equation and determine whether each system has no solution, one solution or an infinite number of solutions 5x-8y=24 10x-16y= -9 Click here to see answer by jim_thompson5910(28598)

 Question 243634: solve the following system of equations x + 7y = 6 (1) x = 5 - 7y (2) what is the solution of the system? Click here to see answer by checkley77(12569)

 Question 243633: Use the elimination method to find all solutions of the system of equations. (Round each answer to two decimal places.) x^2 - y^2 = 25 2x^2 - y^2 = x + 55 Click here to see answer by checkley77(12569)

 Question 243624: Use the substitution method to find all solutions of the system of equations. (Round each answer to two decimal places.) x^2 - y = 6 2x^2 + 3y = 16 Click here to see answer by checkley77(12569)

 Question 243718: how do i find out if a graph on an equation will be parallel or perpendicular if only given the points? EX. (3,1) (5,3) is the graph of the equation parallel, perpendicular or neither? Click here to see answer by oberobic(2304)

 Question 243695: solve the following x + 7y = 6 x = 5 - 7y what is the solution of the system? Click here to see answer by checkley77(12569)