# 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 366344: Hello, I need help with solving these inequality problems please. 100 > -5/3x + 6 > 0 4(x+3)-2>1(+2) Click here to see answer by rfer(12662)

 Question 366386: Maximize P=-21x+11y for the constraints x is greater than or equal to zero y is greater than or equal to zero y is greater than or equal to 4x-4 y is less than or equal to x+5 Click here to see answer by Fombitz(13828)

 Question 367660: Goodmorning I need help solving this system of linear equation. please include steps through out.thankyou 2x + 5y = 4 3x + 2y = 17 Click here to see answer by amoresroy(333)

 Question 367686: Use the rational root theorem and the factor theorem to help solve the following equation: x^3 + x^2 - 25x -25=0. The answer I got was x= 5,-5,1...but I guessed...any help would be most appreciated. Click here to see answer by stanbon(57377)

 Question 367679: Good morning...tried to solve this and the answer I got was: x= 49+(-)i square root 90239...all over 12. The question was to use the rational root theorem and the factor theorem to solve the following equation: 6x^4 - 49x^3 +6x^2 +16x=0......Thank you in advance Click here to see answer by Alan3354(30993)

 Question 367946: I would appreciate your help on this problem. How do I solve this system of equations x+y=6 2x+y=8 Thank you for your time. Click here to see answer by Fombitz(13828)

 Question 367944: x - 14 = -y x - y = 2 Click here to see answer by Fombitz(13828)

 Question 368368: Can someone please show me step by step on this please...I did it but I am off 1 number..I appreciate the time. Use matrix form and Gaussian elimination method to solve the linear system 4x+8y-4z=4 3x+8y+5z= -11 -2x+y+12z= -17 Click here to see answer by Fombitz(13828)

 Question 368405: graph the linear function by finding x and y intercepts -x+2y=6 Click here to see answer by ewatrrr(10682)

 Question 368541: Hello, Can someone please help me to solve this equation to create an equation table using x, y,(x,y). y=-1/2x-4 (the "/" symbol represents 1 over 2) Click here to see answer by Fombitz(13828)
 Question 368541: Hello, Can someone please help me to solve this equation to create an equation table using x, y,(x,y). y=-1/2x-4 (the "/" symbol represents 1 over 2) Click here to see answer by solver91311(16897)

 Question 368538: solve f(g(x)) when f(x)= 3/(x-8) and g(x)= 5/(2x) Click here to see answer by Fombitz(13828)

 Question 368956: (x + 6) divided by the fraction x^2 + 5x - 6 / x^2 + 7x - 8 please find the quotient Click here to see answer by stanbon(57377)

 Question 369229: What is the equation/function for if you enter 3 and the answer is 8 and you enter 10 and the answer is 29 and then you enter 20 and the answer is 59? How do I figure out the equation? Click here to see answer by acalgebra(30)

 Question 369372: Hi, is the following set are bases for R^3? a) S= {[1,2,0],[0,1,-1]} need help asap if possible thanks Click here to see answer by robertb(4012)

 Question 370092: Find an nth-degree polynomial function with real coefficients satisfying the given conditions. n=4; i and 4i are zeros;f(-1)=68 Click here to see answer by Fombitz(13828)

 Question 370217: How do i solve 7x + 2y = -8 8y = 4x Click here to see answer by ichudov(499)

 Question 370360: I don't know how to solve for t here: t^3 - 12 t^2 - 45 t + 56 Wolfram Alpha says t=1. It's so obvious, yet how did it get that answer? It doesn't show any steps. This is the question I couldn't get on my final exam. I tried typing it into the equation solver here but it didn't work... Thanks for your help! Click here to see answer by Alan3354(30993)

 Question 370900: Hello, Could someone help me solve this problem? Thanks in advance. From a base elevation of 9900ft.a mountain peak in Colorado rises to a summit elevation of 14,498ft. over a horizontal distance of 15,839ft. find the grade of the peak. Also round to the nearest tenth please Click here to see answer by rfer(12662)

 Question 370895: Hello, Could someone help me solve this problem please? Thanks in advance. 6y-10<5y-8 what is the solution to this problem ? Click here to see answer by ankor@dixie-net.com(15657)

 Question 371003: i need help with linear programming and determining the maximum and minimums of an unbound function. particularly, given the constraints, i am having a hard time figuring out the points which i will then plug into the given function to determine the max. and min. i understand how to solve bound functions. Click here to see answer by Fombitz(13828)

 Question 372421: Let T(x,y,z) = (y,z,0). Prove that T^3 must be a zero transformation (T^3=ToToT) Click here to see answer by user_dude2008(1861)

 Question 373530: Hello, Can someone help me solve this problem, thanks in advance. An example of a real-life situation that could be modeled by a function is the family wants to go to a local theme park. Tickets are \$25 and parking is \$10. Example below is the total price for a family is given by where a is the number of people in the family. P=25a+10 there are 20 family members Click here to see answer by dianitaa_328(8)

 Question 373535: Hello, I need help solving this problem, thanks in advance. f(x) = \$35.99 * 7 days Click here to see answer by rfer(12662)

 Question 373594: find two numbers whose sum is 0 and whose difference is 6 Click here to see answer by Jk22(389)

 Question 373905: Hello, Can anyone explain why vertical lines fail the "vertical line" test in an easy explanation? Thanks Click here to see answer by Fombitz(13828)

 Question 374048: Hello, Can someone help me solve the following problem? H(x) = 2.75x + 71.48 Click here to see answer by jim_thompson5910(28595)

 Question 374092: Hello can someone help me solve this problem please, thanks. solve f(x) = 1 + 19x * x x = -2 Click here to see answer by jim_thompson5910(28595)

 Question 375020: How can I solve the system of equations x^2+y^2=100 3x-y=10 Click here to see answer by Fombitz(13828)

 Question 375308: can you show me a step by step approach to this f(a+h) - f(a) divided by h. for f(x)=x^2-7. Thank you. Click here to see answer by robertb(4012)

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