Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 419222: solve by the elimination method. 4x+5y=2 8x+10y=4 a.the solution is? b. there are infinitely many solutions c. there is no solution Click here to see answer by Mr. Math Wiz(7)

 Question 419240: solve the following system of equations x+3y=4 (1) x=5-3y (2) the solution is?? or there is no solution? Click here to see answer by Theo(3464)
 Question 419240: solve the following system of equations x+3y=4 (1) x=5-3y (2) the solution is?? or there is no solution? Click here to see answer by duckness73(43)

 Question 419228: find the domain of the function g(x)=10/4-5x choose the correct domain a. {x|x is a real number and x=10} ( # has a line thru it) b. {x|x is a real number and > 4/5} the arrow has a line under it c. {x|x is a real number and x # 4/5} ( # has a line thru it) d. {x|x is a real number and x#0}( # has a line thru it) Click here to see answer by ewatrrr(10682)

 Question 419297: What is 7245 is expanded notation? Click here to see answer by rfer(12662)

 Question 419451: solve for x: 20000 = 2000e ^6x how would you get the answer without the use of log? Click here to see answer by stanbon(57377)

 Question 419461: solveusing the addition and multiplication principles. 3x+7x<38 the solution set is {x|x_ _} Click here to see answer by stanbon(57377)

 Question 419463: decide whether the pair of lines is parallel, perpendicular or neither. 5x+2y=5 2x+5y=6 the lines are: A-neither B-parallel c-perpendicular Click here to see answer by stanbon(57377)

 Question 419458: solve the following systems of equations. x+2y=8 (1) x=7-2y (2) a.the solution is?? b. there is no solution Click here to see answer by stanbon(57377)

 Question 419470: pencils are .25 each & notebooks are 1.00 each. if we have \$20.00 how many pencils & pens did we puchase? how much did we spend on each. Please show work. thank you. Click here to see answer by stanbon(57377)

 Question 419638: How do i solve this system of equations? 2x+y=12 3x-y=13 Click here to see answer by dnanos(83)

 Question 419660: 7/x + x = 16/x Click here to see answer by nerdybill(6962)

 Question 419816: How do you get the answer to 6=a/4+2? Click here to see answer by nerdybill(6962)

 Question 419867: I have tried and tried this equation but when I check it, it does not equal out right. 3/4 = 1-(3x-2)/(x+1) This is what I am getting: 3/4-1 = 1-1-(3x-2)/(x+1) subtract 1 from both sides 3/4-4/4=-(3x-2)/(x+1) -1/4=-(3x-2)/(x+1) negatives cancel each other out 1/4=(3x-2)/(x+1) cross multiply 1(x+1)=4(3x-2) x+1=12x-8 subtract 12x from both sides -11=-7 x=7/11 Am i doing this right because it does not compute when checking? Click here to see answer by josmiceli(9686)

 Question 420083: simplify a complex fraction -3/10 devided by3/5(-2/3) Click here to see answer by stanbon(57377)

 Question 420077: If a car can travel 400km by 2L of gas how many Litres of gas will it take to travel for 7km? Click here to see answer by rfer(12662)

 Question 420095: What is the slope intercept form of 3x+9y=6y-6? Click here to see answer by algebrahouse.com(1079)

 Question 420021: If 30 men can plant a 100 trees in 9 days, how long does it take for 36 men to plant 4400? Click here to see answer by Edwin McCravy(8909)

 Question 420203: can u teach me how to divded 9000 into 1800? Click here to see answer by Theo(3464)

 Question 420331: I don't understand how to work this out,to get the answer:5d = 17.1 Click here to see answer by algebrahouse.com(1079)

 Question 420611: Does a positive plus a positive equal a positive or does it equal a negative? Also does a negative plus a negative equal a positive or does it equal a negative? Does a positive plus a negative equal a positive or a negative? Click here to see answer by stanbon(57377)

 Question 420707: solve the system of equations by graphing, then classify as consistent, or inconsistent and as dependent or independent. 5x-6y=-24 6y-5x=24 What is the solution of the system of equations. a. infinitely many solutions b. no solution c. a point Is it consistent or inconsistent? are the equations dependent or independent? Click here to see answer by MathLover1(6634)

 Question 420710: solve by the elimination method 7r-8s=-21 8r+7s=89 a.the solution is? b.there are infinitely many solutions c.there is no solution Click here to see answer by mananth(12270)

 Question 420762: SOLVE FOR N 2N-3=9-N Click here to see answer by stanbon(57377)

 Question 420907: 2/t+6=3/t-1 Click here to see answer by algebrahouse.com(1079)

 Question 421110: what is the answer of 2x-1=15 show the solution Click here to see answer by nerdybill(6962)

 Question 421131: How do I describe how to solve the following using factorization and zero factor property. 1. x^2 -x - 6 = 0 Thank you! Click here to see answer by algebrahouse.com(1079)

 Question 421192: I need help..i don't understand to multiply and simplify b^15 * b^0 =...wouldn't that be b^) Click here to see answer by sudhanshu_kmr(1152)

 Question 421205: Translate the following into an equation. Do not solve: The sum of three consecutive odd integers is 85 less than four times the first. What is the first integer? Click here to see answer by sudhanshu_kmr(1152)

 Question 421259: the perimeter of a rectangle is 104.The length exceeds the width by 32 inches. Find the length and the width. Click here to see answer by josmiceli(9686)

 Question 421280: Solve t in the fonnula N = No.e^kt, where No = 2.51.10^-12, N = 7.23.10^6.No , k = 0.555 (1/s) and e is Neper's number (~ 2.71828). I FOUND t=28.457 Click here to see answer by josmiceli(9686)

 Question 421240: I'm trying to find out how to do these problems examples are: 3n+5=6 4+5x=1 4y-15=-10 Please help Click here to see answer by rfer(12662)

 Question 421399: solve using the multiplication principle -4x>1/11 the solution set is{x|x_ _} Click here to see answer by stanbon(57377)

 Question 421400: determine whether (-9,-3) is a solution of 8x-3y=-2 is (-9,-3) a solution to the equation? yes or no Click here to see answer by stanbon(57377)

 Question 421402: solve, then graph y-2>-14 the solution is {y|y>_} Click here to see answer by stanbon(57377)

 Question 421403: find the slope, if it exists, of the line containing the pair of points. (7,8) and (9,-7) a.the slope m=? b. the slope is undefined Click here to see answer by stanbon(57377)

 Question 421401: use < or> to make the statement true -3_10?? Click here to see answer by stanbon(57377)

 Question 421396: collect like terms 15x+4y-11x-7y 15x+4y-11x-7y=?? Click here to see answer by stanbon(57377)

 Question 421408: Find the original price of a pair of shoes if the sales price is \$36 after a 20% discount. Click here to see answer by rfer(12662)

 Question 421395: solve -0.5x<-15 the solution is {x|_} Click here to see answer by rfer(12662)

 Question 421422: How do you simplify -2[3a+(-b)]+3[(-a)+2b)] Click here to see answer by stanbon(57377)

 Question 421430: How do you simplify (-1/4)[24x-(-12y)] Click here to see answer by algebrahouse.com(1079)

 Question 421428: My mom finally gave me the answers because I couldn't get these problems right after numerous attempts. Your solutions will go to her email. I am homeschooled. you said I could ask for solutions to five questions. Here are 5: ((x^2+4x)/(x+3)) ((x^2 – 9)/(x^2 + x – 12)) couldn't get it after 3 tries, the answer is x but I'm not getting the steps to the answer x. Click here to see answer by algebrahouse.com(1079)

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