# Questions on Algebra: Systems of Linear Equations answered by real tutors!

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 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 336264: I am looking for the process of converting m/s to mi/h, as in the speed of sound. Click here to see answer by ankor@dixie-net.com(15656)

 Question 336334: After robbing a bank in Dodge City, a robber gallops off at 12 mi/h. 10 minutes later, the marshall leaves to pursue the robber at 15 mi/h. How long (in hours) does it take the marshall to catch up to the robber? Click here to see answer by checkley77(12569)

 Question 336507: True or False? If the intersection of two closed intervals is nonempty, then their intersection is a closed interval. Click here to see answer by user_dude2008(1861)

 Question 337178: I've been trying to simplify the following expression and keep missing a step while doing so. Can you please assist me? Thank you! 1/2(3x + 2)- 1/4(3x - 2)= [{{(1/2)*3x} + {(1/2)*(2/1)}} + {-1{{(1/4)*3x}-{(1/4)*2}}}]= [{(3x/2)+(2/2)} + {-1{(3x/4)-(2/4)}}]= [{(3x/2+1)} + {-1*(3x/4)}-{(-1)*(1/2)}}]= [(3x/2+1)} + {{(-1)*(3x/4)}-{(-1)*(1/2)}]= [{3x/2 + 1} + {-3x/4 + 1/2}]= [{3x/2 + 1} + {-3x/4 +1/2}]= [3x/2 +1 -3x/4 +1/2]= 3x/2 -3x/4 + 1+ (1/2)= 2/2*3x/2 - 3x/4 +1 1/2 = (6x/4-3x/4) + 1.5 = 3x/4 +1.5 or 3/4x + 1.5 Click here to see answer by stanbon(57361)
 Question 337178: I've been trying to simplify the following expression and keep missing a step while doing so. Can you please assist me? Thank you! 1/2(3x + 2)- 1/4(3x - 2)= [{{(1/2)*3x} + {(1/2)*(2/1)}} + {-1{{(1/4)*3x}-{(1/4)*2}}}]= [{(3x/2)+(2/2)} + {-1{(3x/4)-(2/4)}}]= [{(3x/2+1)} + {-1*(3x/4)}-{(-1)*(1/2)}}]= [(3x/2+1)} + {{(-1)*(3x/4)}-{(-1)*(1/2)}]= [{3x/2 + 1} + {-3x/4 + 1/2}]= [{3x/2 + 1} + {-3x/4 +1/2}]= [3x/2 +1 -3x/4 +1/2]= 3x/2 -3x/4 + 1+ (1/2)= 2/2*3x/2 - 3x/4 +1 1/2 = (6x/4-3x/4) + 1.5 = 3x/4 +1.5 or 3/4x + 1.5 Click here to see answer by chiexpert(48)

 Question 337180: Please help me with trying to solve this equation. I'm missing a solution step in solving for x. Thank you! x + 0.06x = 742 Click here to see answer by Fombitz(13828)
 Question 337180: Please help me with trying to solve this equation. I'm missing a solution step in solving for x. Thank you! x + 0.06x = 742 Click here to see answer by stanbon(57361)

 Question 337183: if the linear equation is 2b=18 do i just need to solve for b? Click here to see answer by Fombitz(13828)

 Question 337561: After robbing a bank in Dodge City, a robber gallops off at 13 mi/h. 30 minutes later, the marshall leaves to pursue the robber at 15 mi/h. How long (in hours) does it take the marshall to catch up to the robber? Click here to see answer by Fombitz(13828)

 Question 337566: Simplify the algebraic expression 2(4y-2)-(3y+4) 2(4y-2)-(3y+4) 8Y-4-3Y-4 5Y-8 Click here to see answer by chiexpert(48)

 Question 337624: Solve by elimination 8x + 7y = -16 6x - 3y = -12 Click here to see answer by Fombitz(13828)

 Question 337813: 1. points A, B, and C are collinear and A is between B and C. AB= 4x -3 BC =7x + 5, and AC = 5x -16 Find each value. a. BC b. AB c. AC Please e3xplain how to solve this problem Click here to see answer by solver91311(16897)

 Question 337889: (2g-15)+g=9 +15 +15 2g + g = 24 3g = 24 g = 8 Click here to see answer by alexcar310(1)

 Question 337931: t-2(3-2t)=2t+9 3t-6-2t^2+4t=2t+9 7t-6-2t^2=2t+9 5t-6-2t^2=9 5t-2t^2=15 -2t^2+5t-15=0 I believe I have it right to this point, but I can not remember how to simplify when it is squared. Click here to see answer by edjones(7569)

 Question 338337: what do all memebers of the family of linear functions f(x)=1+m(x+3)? sketch several memebers of the family. Click here to see answer by solver91311(16897)

 Question 338448: "Two dump trucks have capacities of 10 tons and 12 tons. They make a total of 20 round trips to haul 226 tons of topsoil for a landscaping project. How many round trips does each truck make?" I just need help with setting up the system, I can do the rest. Thanks! Click here to see answer by jim_thompson5910(28595)

 Question 338878: I have been out of schol for too long. I have the word problem: The greater of two numbers is five less than twice the lesser number. The sum of two numbers is 28. this is as far as I got x+y=28 2x-5=y Click here to see answer by jim_thompson5910(28595)

 Question 339187: Forty decreased by the number m is 24.5? The sumof one third of the number s and 12 is 32? Four less than twice a number is nine? Three times two dcreased by x is eight? Three diminished by twice a number is eight? Click here to see answer by rfer(12662)

 Question 339141: How many possible solution are there for:- 2x+3y+12z=180 ,where x,y, z are all positive integers???? Click here to see answer by Edwin McCravy(8909)

 Question 339333: The function W(d)=0.112d approximatesthe amounts, in centimeters, of waterthat results from d centimeters of snow melting. Find the amount of water that results in snow melting from depths of 12 cm, 49cm, and 87cm Click here to see answer by nyc_function(2733)

 Question 339533: i worked this problem: (2x + 1)/3 - (3-x)/4 = (x)/6 and i got 1.67 = x which is wrong this is how i did it: (2x+1)/3 - (3-x)/4 = (x)/6 multiply by the LCD,12. to get rid of the fractions 24x+12/3 - 36-12x/4 = 12x/6 8x + 4 - 9 - 3x = 2x simplify 5x - 5 = 2x subtract 2x to get the variables on the same side 5x - 5 - 5x = 2x - 5x -5 = -3x multiply by 1/-3 -5(1/-3) = -3x(1/-3) -5/-3 = -3x/-3 simplify 1.67 = x can you tell me what am i doing wrong??? thanks! Click here to see answer by jrfrunner(365)

 Question 339851: Find three consecutive integers whose sum is -33. Click here to see answer by Alan3354(30993)
 Question 339851: Find three consecutive integers whose sum is -33. Click here to see answer by nerdybill(6962)

 Question 339513: solve A= 2(pi)rh + 2(pi)r^2 for (pi) i worked this problem and my answer was (A)/2rh + 2r^2 = (pi) i was not sure how to do the problem so i'm a liitle uncertain about my answer, but have no way of checking it.... is it right? Click here to see answer by Fombitz(13828)

 Question 340508: X+5(x-1)=19 2x=10(x-4) 6x-11=-2x+5 18x-15=-21+12x 1/2(10x-6)=x-15 7(1-x)=-4x-11 3(2x+12)=-2(x-4)+x 8(x-1)=3x+7 2x+4(2x-1)=6(x+4) i need help with these problem cant figure them out can someone please help me i really need thx to who ever can help me. Click here to see answer by rfer(12662)

 Question 340669: 2d + 1/5 = 3/5 How would you work these kinds of problems? Click here to see answer by rfer(12662)