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

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

 Question 64806: Find the value of the variable. (3x-40)degree (2x-10)degree Click here to see answer by checkley71(8403)

 Question 65323: HELP! WHAR IS THE SLOPE OF THE LINE MODELD BY THIS EQUATION Y=5X-11?????????????? help, PLEASE Click here to see answer by checkley71(8403)

 Question 65319: the orderd pair (-2,1) is a solution to the following system: 2x+5y=1 3x-2y=4 Click here to see answer by stanbon(57246)

 Question 65368: simplify: x-2 over x+2 minus x+3 over x-3 Click here to see answer by stanbon(57246)

 Question 65364: evaluate: a^2-b^2 over a-b when a=3 and b= -4 Click here to see answer by babynarah2007(12)

 Question 65420: simplify: 3/x + 1/x+4 divided by 1/x + 3/x+4 Click here to see answer by stanbon(57246)

 Question 65459: solve: 2-3x<6 and 2x+1>4 write the solution set in interval notation Click here to see answer by stanbon(57246)

 Question 65503: DirectionsL: Solve the the given variable. (1) D= t^2 + vt (for v) (2)V= pie r^2 h ( for h) (3) P= 2l +2w (for w) (4) P= 1/rt (for t) Click here to see answer by ptaylor(2048)

 Question 65517: ```mÐ1:mÐ2 = 1:5. Find mÐ2 Click here to see answer by Edwin McCravy(8882)  ```

 Question 65422: simplify: x^2-3x over 2x^2-3x-5 / 4x-12 over 4x^2-4 Click here to see answer by Nate(3500)
 Question 65422: simplify: x^2-3x over 2x^2-3x-5 / 4x-12 over 4x^2-4 Click here to see answer by checkley71(8403)

 Question 64895: y + • w is this an expression? Click here to see answer by Edwin McCravy(8882)

 Question 64681: please help : Solve the system by graphing and then get an exact solution by using either substitution or elimination : 2x - y = -1 6x + 3y = 0 Click here to see answer by jayanthihemkos@yahoo.com(87)

 Question 65675: Can someone correct this for me. Find values for m and b in the following system so that the solution to the system is (1,2) Mx+3y=8 -3x +4y = b --------------------------------- m (1) + 3(2) = 8 1m + 6 = 8 -6 -6 1m = 2 1m/1 = 2/1 m = 2 ----------- -3(1)+ 4 (2) =b -3+ 8 = b 5 = b so the values are: m = 2 and b=5 Click here to see answer by praseenakos@yahoo.com(507)

 Question 65776: Plwase help, I am to simplify and all exponents should be positive Thanks, Lackinmath (3x4y^3-5y)-(2x+3y^3-5y) Click here to see answer by checkley71(8403)
 Question 65776: Plwase help, I am to simplify and all exponents should be positive Thanks, Lackinmath (3x4y^3-5y)-(2x+3y^3-5y) Click here to see answer by funmath(2925)

 Question 64242: I have to do a really big project and I got stuck doing this. I do not know what is means. What is an algebraic expression using equations and inequalities? Will you give me examples of each. Click here to see answer by venugopalramana(3286)

 Question 64255: hey. so im new to learning algebra they just put me in it. can you show me how to slove these problems below? Triangle ABC woth A(-4,-1)B(-2,-1)C(-4,4) is rotated 180* about the orgin. what are the coordinates of the vertices of the figure after the triangle is rotated? state the range of the relation.{(-2,5)(0,-1)(-1,4)(-1,5)} solve: y= 2x-7 if the domain is {-3,1,5} If g(x)= 3x squared- 4x+1, what is the value of g(-2) find the solution set of 2x-y squared=8 give the replacemebt set {(2,-2)(6,22)(6,2)(4,0)(12,-4)} thanks. Click here to see answer by venugopalramana(3286)

 Question 64511: Solve the system by graphing and then get an exact solution by using either substitution or eliminations 2x - y = -1 6x + 3y = 0 Click here to see answer by darq(90)

 Question 65939: Now i have an equation which is : 3x = 3x + 5 which I know has no solution to it, now whereas the equation 7x + 8 = 8 has zero as a solution. What is the difference between a solution of zero and no solution? Click here to see answer by 303795(595)
 Question 65939: Now i have an equation which is : 3x = 3x + 5 which I know has no solution to it, now whereas the equation 7x + 8 = 8 has zero as a solution. What is the difference between a solution of zero and no solution? Click here to see answer by stanbon(57246)

 Question 65970: How would (the product of 3 less than twice x and 2 more than the quantity 3 times x) be written as an expression? Click here to see answer by uma(370)

 Question 66021: The formula C=p(lw/9) gives the cost C of carpeting a room l feet long and w feet wide, where p = price per square yard of the carpeting. Solve C = p(lw/9) for l. l=L just in lowercase. PLEASE HELP ME! Click here to see answer by Earlsdon(6287)