# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 362108: using multiple steps solve following: (6a-4)= 8 ______ 7 Click here to see answer by checkley77(12569)

 Question 362269: well, im doin a project about two stepp equations and i can't seem to find a problem with the answer of 12, can u give me a problem that i can answer and the answer will be 12? Click here to see answer by edjones(7569)

 Question 362289: Envelope stuffing. Every week, Linda must stuff 1000 envelopes. She can do the job by herself in 6 hours. If Laura helps, they get the job done in 5 1/2 hours. How long would it take Laura to do the job by herself ? Click here to see answer by mananth(12270)

 Question 362348: How do you know when an equation has infinetly many solutions, and when an equation has no solution? Click here to see answer by Fombitz(13828)

 Question 362381: Given f(x) = -2x^2 + 12x - 5 I must complete the square and put in the form y = a(x - h)^2 + k -2x^2 + 12x = 5 x^2 - 6x = -5/2 x^2 - 6x + 9 = 13/2 (x - 3)^2 = 13/2 x - 3 = sqrt(13/2) x = 3 +/- sqrt(13/2) From here, how I would put this into the standard form? I have h = -b/2a = 3 and k = (c-b)^2/4a = -289/8 (?) Not sure how I would enter x, wouldn't there be two of them? Thanks for any help you can provide :-) Click here to see answer by Fombitz(13828)

 Question 362390: During a chemical reaction, the temperature in the beaker decreased every minute by the same number of degrees. The temperature was 16°C at 11:08 A.M. By 11:43 A.M., the temperature had dropped to -17°C. By how many degrees did it drop each minute? the answer I came up with was 1.06 but i have no clue Click here to see answer by mananth(12270)

 Question 362507: Two bicyclists ride in opposite directions. The speed of the first bicyclist is 5 miles per hour faster than the second. After 2 hours they are 70 miles apart.Find their rates. Click here to see answer by josmiceli(9667)

 Question 362505: An airplane flies from New Orleans, Louisiana, to Atlanta, Georgia, at an average rate of 320 miles per hour. The airplane then returns at an average rate of 280 miles per hour. The total travel time is 3 hours. How long did it take to fly from New Orleans to Atlanta? Click here to see answer by Alan3354(30993)

 Question 362626: I need a equation and slope of the line problem, like 8x+4y=12. I only need one more. Thanks Click here to see answer by rfer(12654)

 Question 362690: The perimeters of two triangles are equal. Find the side lengths of each triangle: Triangle 1 a-b 2x + 4 b-c 2x + 3 c-a 2x Triangle 2 p-q 2x q-r 2x r-p 3x + 1 Click here to see answer by jim_thompson5910(28536)

 Question 362728: how do i do the steps to sovle this probem: 1/6(a-4) = 1/3 (2a+4)............. i have had so much trouble with math some how i ened up in algebra and i shouldnt be so yea please help Click here to see answer by robertb(4012)

 Question 362790: Good evening, I'm having trouble determining how to find the x-intercepts of the following function: Click here to see answer by Manny Pacquiao(82)

 Question 362730: how do i solve this problem :1.03-4 = -2.15p+8.72...... thanks Click here to see answer by rfer(12654)

 Question 362853: Good evening, I'm having trouble determining how to find the x-intercepts of the following function: y = 2(x-3)^2 - 23 I found the y-intercept by setting x to zero: y = 2(0-3)^2 - 23 y = 18-23 y = -5 However, I know I'm not finding the x-intercepts correctly, as I'm only coming up with one x-intercept using the quadratic equation: x = [12 +/- sqrt(144 - 4(2)(18))] / 2(2) x = (12 +/- 0)/4 x = 3 Could you let me know how I should be finding the x-intercept? Thanks so much for sharing your knowledge with us students :) Click here to see answer by mananth(12270)

 Question 362975: Solve the system of equations by elimination 2x+12y=50 10x+3y=35 Click here to see answer by Fombitz(13828)

 Question 363077: Solve 3x-5(x-6)=2(10-x) Here is my work, but I am not coming out with a correct answer. 3x - 5x + 30 = 20 - 2x 2x + 3x - 5x + 30 = 20 0x = -10 Click here to see answer by Fombitz(13828)

 Question 363109: 3x + 7 = (9 + x) + 2x Can it be? 0 = -2 Click here to see answer by CharlesG2(828)