# Questions on Algebra: Linear Algebra (NOT Linear Equations) answered by real tutors!

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 Algebra: Linear Algebra (NOT Linear Equations) Solvers Lessons Answers archive Quiz In Depth

 Question 593417: help me solve, and show the steps.75+ 2d>125 Click here to see answer by saifoo.khan(162)

 Question 593991: Use the elimination method to solve the following system of equations 4x  2y  z = 5 x  3y + 2z = 3 3x + y  2z = 5 Click here to see answer by Alan3354(30993)

 Question 596273: 6 = x^2 - x solution set for the following equation Click here to see answer by jim_thompson5910(28598)

 Question 597662: name the set(s) of numbers to which 1.18 belongs. Click here to see answer by stanbon(57415)
 Question 597662: name the set(s) of numbers to which 1.18 belongs. Click here to see answer by math-vortex(472)

 Question 597802: What is the value of the expression 4x-2xy, when x=-1 and y=5? Click here to see answer by Alan3354(30993)

 Question 597990: A stationery company sells two types of notepads to college bookstores, the first wholesaling for 50’ and the second for 70’. The company receives an order for 550 notepads, together with a check for \$311. If the order fails to specify the number of each type, how should the company fill the order? Click here to see answer by josmiceli(9697)

 Question 598515: -2x + 3y - 4z - w = 1 x + 2y + 2z - w = -2 x - 5y + 2z = 1 how do I solve this equation? Click here to see answer by Alan3354(30993)

 Question 600876: x+y+6z=-31 x+y+9z=-43 x-2y-6z=-26 i have to find out the xyz by eliminating variables Click here to see answer by lynnlo(4164)

 Question 600875: x+y+6z=-31 x+y+9z=-43 x-2y-6z=-26 i have to find out the xyz by eliminating variables Click here to see answer by lynnlo(4164)

 Question 600960: what is the equation of the line plots (-2,1) (0,1) Click here to see answer by mananth(12270)

 Question 603096: Determine what m and b represent: The cost, in dollars, of retaining the services of a computer repairman in Anchorville is given by C(x)=49x+21, where x is the number of hours worked. Click here to see answer by KMST(1874)

 Question 604212: What is 27-3x=15 8-x/3=6 and could you explain it step by step thanks Click here to see answer by flame8855(424)

 Question 604295: whats the vertex form of the graph y=x^2+4x-1 Click here to see answer by lawdej(58)

 Question 605423: b = =-4/3. 1. Subtract 1 from the left side, you then have b/2 = -2/3. 2. Multiply by 2 to get the by alone...2(b)=(-2/3)2. 3. b is equal to -4/3. Click here to see answer by Andr3w128(2)

 Question 607237: Find the Wronskian of 1, cos2x, sin²x at x=PI/2. Are these functions dependent? Click here to see answer by solver91311(16897)

 Question 606873: < does this mean you shade above or under the line ? And what does this one mean too ? > Click here to see answer by richard1234(5390)

 Question 608299: how do i solve y is greater than or equal to negative 4? Click here to see answer by Alan3354(30993)

 Question 608520: What is the equation of the line that has an x-intercept of −5? Click here to see answer by flame8855(424)

 Question 609360: solution for y=x y=-x+2 using the substitution method Click here to see answer by flame8855(424)

 Question 610134: determine whether the equation 3x - 4y = 0 is linear in the variables x and y. Click here to see answer by Alan3354(30993)

 Question 613837: An airplane flying against the wind travels 242 miles in the same time that it can travel 253 miles with the wind. If the wind sped is 15 miles per hour, what is the speed of the airplane in still air ? Click here to see answer by mananth(12270)

 Question 614000: A boat travels 120 km downstream in 4 hours and takes 6 hours to return. How long will it take in still water? Click here to see answer by ankor@dixie-net.com(15664)

 Question 614444: Consider the linear function f(x)=A(x-B)+C. Discuss all the changes in the graph as A,B,and C change from positive,negative,zero, as well as, grow smaller or larger. Discuss the domain and range of linear functions. Click here to see answer by josmiceli(9697)

 Question 614521: the line passing through points (x,4)and(4,-5) is perpendicular to a line with a slope of -7/3.Which is the value of x? Click here to see answer by ewatrrr(10682)