# Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

Algebra ->  Algebra  -> Expressions-with-variables -> Questions on Algebra: Expressions involving variables, substitution answered by real tutors!      Log On

 Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

 Algebra: Expressions involving variables, substitution Solvers Lessons Answers archive Quiz In Depth

 Question 751423: A man flies a small airplane from Fargo to Bismarck, North Dakota --- a distance of 180 miles. Because he is flying into a head wind, the trip takes him 2 hours. On the way back, the wind is still blowing at the same speed, so the return trip takes only 1 hour 12 minutes. What is his speed in still air, and how fast is the wind blowing? His speed equals-- The wind speed equals-- Click here to see answer by ankor@dixie-net.com(15652)

 Question 751652: Factor each difference of squares -2z^3 + 2z Click here to see answer by MathLover1(6632)

 Question 751651: Factor each difference of squares (x-3)^2 - 16 Click here to see answer by jim_thompson5910(28595)

 Question 751644: how do you solve for x : heres the question 0.35x+0.6=0.1x+1 Click here to see answer by solver91311(16885)

 Question 751532: y=(3x-4)/(5x+1)- What are the x and y intercepts of the equation. Find them exactly. Click here to see answer by josgarithmetic(1520)

 Question 750832: There are 40 pupils in a class. There are X more girls than boys. How many boys are there in terms of X? Click here to see answer by stanbon(57347)

 Question 750829: If Rita is paddling her canoe upstream against the current at a speed of 2mph and later travels downstream from the current at a speed of 3mph, what is the average speed in still water Click here to see answer by stanbon(57347)

 Question 750751: If -1 < M < 1 and N does not = 0, which of the following statements is always true? 1. N <2N 2. N^2 < N 3. N^2 < 1/N^2 Click here to see answer by tommyt3rd(562)

 Question 750558: what is the square root of 8z^2 y^3 Click here to see answer by tommyt3rd(562)
 Question 750558: what is the square root of 8z^2 y^3 Click here to see answer by lwsshak3(6505)

 Question 750513: what does the x any y equal using substitution in both equations 2x+y=0; x+3y=-56 Click here to see answer by checkley79(3050)

 Question 750512: Simplify "v" to the 6th power multiplied by "v" to the 3rd power, then "v" to the 6th power. Would the v6's cancel each other out? Click here to see answer by Alan3354(30993)
 Question 750512: Simplify "v" to the 6th power multiplied by "v" to the 3rd power, then "v" to the 6th power. Would the v6's cancel each other out? Click here to see answer by stanbon(57347)

 Question 750494: what does x and y equal using substituition in both equations 2x+y=0; x=3y=-56 Click here to see answer by jim_thompson5910(28595)

 Question 749970: If x = 4 and y = 1/9 evaluate the expression a) 96(x^2y^-1/2)^-2 (x^-3 y)^-1/2 Can you please help me out? Thanks so much in advance:) Also can you please show the steps it would really help me understand better:) Click here to see answer by MathLover1(6632)
 Question 749970: If x = 4 and y = 1/9 evaluate the expression a) 96(x^2y^-1/2)^-2 (x^-3 y)^-1/2 Can you please help me out? Thanks so much in advance:) Also can you please show the steps it would really help me understand better:) Click here to see answer by stanbon(57347)

 Question 749912: 1/2x-3/10x=x-1/2 the problem im having is with the steps. its not that i do not know the answers its how do i get there????? to solve for x that is Click here to see answer by timvanswearingen(106)
 Question 749912: 1/2x-3/10x=x-1/2 the problem im having is with the steps. its not that i do not know the answers its how do i get there????? to solve for x that is Click here to see answer by ankor@dixie-net.com(15652)

 Question 749849: 1.Which property is illustrated by this example? 7x1=7 A.Associative B.Distributive C.Multiplication Property of Zero D.Identity Which property is illustrated by this example? (3 +4) + 6 = 3 + (4 + 6) A.Distributive B.Identity C.Commutative D.Associative Click here to see answer by fcabanski(874)

 Question 749445: m/(m-9)-10=9/(m-9) how do I solve for m? thanks :) Click here to see answer by checkley79(3050)

 Question 748945: i) Find the perimeter of a rectangle with a length of 5x and width of x ( write an algebraic expression ) ii) if the perimeter was 30m, what was the value of x? Click here to see answer by Cromlix(339)

 Question 748747: Been a while since ive done algebra :) instructions: Solve each equation. The letter a b and c are constants. the problem is 1-ax=b and a DOESNT equal 0. Click here to see answer by stanbon(57347)

 Question 748746: Simplifying Rational Expressions The problem below is difficult for me to understand. I am having trouble soving it. I Have written it three ways. Please Help! 1. 5 or 5/10x-60 or Five divided by ten(x) minus sixty --- 10x-60 Click here to see answer by stanbon(57347)