# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 402876: When 40 percent of "Y" is 15, what is 20 percent of 2y Click here to see answer by jim_thompson5910(28476)

 Question 402966: I am trying to write an algebraic expreession for the following: 5 less than 2/3 of a number is 3. Click here to see answer by Alan3354(30955)
 Question 402966: I am trying to write an algebraic expreession for the following: 5 less than 2/3 of a number is 3. Click here to see answer by stanbon(57214)

 Question 403041: Solve. (7+u)(3u-1)=0 (If there is more than one solution, separate them with commas.) Click here to see answer by Alan3354(30955)

 Question 403091: I am in 7th grade. And i was not in pre-algebra class for the lesson. So, my homework asks "write each equation as a function in "y=..." form. My first problem is . . . 1: 3y= 15x - 12 I dont get how to do it. And everytime i look for help, it's always shows more complicated than it seems. Help? Click here to see answer by stanbon(57214)

 Question 403120: I used to know how to do this type of problem, but I'm confused. 1/X - 2/X^2-X + 3/X^3-X^2 Click here to see answer by sofiyac(695)

 Question 403178: HI i am taking Geography i know that this is for math but in this case it does pertain.: I am trying to figure out ratios using cross multiplication 1 inch on a map is the equivalant to 24000 inches on the ground (in real life) 5280 ft. in 1 mile If the distance on the map is 10 inches, than how many miles is that on the ground? so far i have tried: 1/24000=10/x 24000*10=1x 240000=x 240000/5280= 45.5 miles I hope i wrote that so it made sense, i would like to know if i did that correctly? Thanks, Brooke Click here to see answer by josmiceli(9645)

 Question 403283: Use substitution method: Answer as an ordered pair, no solution, or infinite number of solutions x=-5-2y x+2=1 Click here to see answer by richard1234(5390)

 Question 403286: Two angles are supplementary, and one is 5 degrees more than six times the other. Find the larger supplementary angle? Click here to see answer by checkley79(3039)

 Question 403273: 2w + 5w +6w -3w +5w -4w= 70..........w=? Click here to see answer by checkley79(3039)
 Question 403273: 2w + 5w +6w -3w +5w -4w= 70..........w=? Click here to see answer by Tatiana_Stebko(1326)

 Question 403295: I am stuck on a problem. I need to find the value of 'x' and simplify. I've tried 3 different ways to do it and none are coming out right, (according the the back of the book). The equation is: 2(5x-3)-(2x-4)=5-(6x+1) please help!!! Click here to see answer by Alan3354(30955)

 Question 403306: A chemist needs 130 milliliters of a 31% solution but has only 17% and 43% solutions availble. Find how many millimiters of each that should be mixed to get the desired solution. Click here to see answer by Alan3354(30955)

 Question 403292: Which set of steps can you use to solve 3x - 2 = 13 in two steps? Click here to see answer by jim_thompson5910(28476)

 Question 403285: The perimeter of a rectangle is 76m. If the width were doubled and the length were increased by 5 m, the perimeter would be 120m. What are the length and width of the original rectangle? Click here to see answer by Tatiana_Stebko(1326)

 Question 403407: Find the area of the square: x^2 + y^2 = 144 Click here to see answer by sofiyac(695)

 Question 403424: I am doing pythagorean theorem. I am trying to solve for x A:x B: X+7 C: 13 I have completed the problem to 2x^2 + 14x-120=0 What is the next step to solve for x? Click here to see answer by richard1234(5390)

 Question 403749: From a point on a river, two boats are driven in opposite directions, one at 8 mph and the other at 11mph. In how many hours will they be 57 miles apart? Click here to see answer by septimus98(1)
 Question 403749: From a point on a river, two boats are driven in opposite directions, one at 8 mph and the other at 11mph. In how many hours will they be 57 miles apart? Click here to see answer by MathTherapy(1420)

 Question 403923: HELLO HOW WOULD YOU SOLVE: (-22)(2) + 5 (-3 - 5)? shOW WORK PLEASE Click here to see answer by stanbon(57214)

 Question 403919: hello, how would you solve: -5 -10 + 7 - 4 +22? show work please Click here to see answer by kkhen123(1)

 Question 403934: Given y is two times x, z is three times x, and x + y + 3z = 12. What are the values of x, y, and z ? Click here to see answer by stanbon(57214)

 Question 403925: HELLO HOW WOULD YOU SOLVE : 6xy - 5x2- 6xy- 2x2- 12xy + 10x2 show work please Click here to see answer by Tatiana_Stebko(1326)