# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 427545: 48 equals a number increased by 6, and the sum, all multiplied by 5. . Click here to see answer by algebrahouse.com(1079)

 Question 427920: Hii.. I'm really stuck on solving this:: 5x+3+(-x)=2x+1+2x+3 can u help me thanks Click here to see answer by josmiceli(9817)

 Question 428102: one pump can drain a pool in 12 minutes. when a second pump is also used the pool only takes 9 minutes to drain.how long would it take the second pump to drain the pool if it were the only pump Click here to see answer by htmentor(808)

 Question 428131: 3x+4y=15 -4x-3y=-20 I need to solve this through the addition method. Is there an easy way to do this? Click here to see answer by htmentor(808)
 Question 428131: 3x+4y=15 -4x-3y=-20 I need to solve this through the addition method. Is there an easy way to do this? Click here to see answer by solver91311(17077)

 Question 428180: 1. f(x)= x^3 - 3x^2 + x + 1 2. f(x)=sinx + 1 on [-2pi, 2pi] 3. f(x)=(x^2)(e^(-4x)) (a) Find the x- and y-intercepts of the function. (b) Draw a number line for f: (c) Find all critical numbers for f prime: (d) Draw a number line for f prime: (e) Find all zeros of f double prime: (f) Draw a number line for f double prime: (h) Find all inflection points of f: (i) Sketch the graph of f. Label all inflection points. Label your axes. Click here to see answer by richard1234(5390)

 Question 428521: how do you get the solution to 4(y - 2) = 2(y + 4) + 2 Click here to see answer by Gogonati(817)

 Question 428610: an orange costs N cents and an apple costs 15 cents more.The total cost of 6 oranges and 8 apples is \$11.70, what is N? Click here to see answer by Gogonati(817)

 Question 428799: I would like to find out the equation for figuring out how long in seconds that it would take my train which is "x" feet long to completely pass through "y" length of railroad at a given rate speed which is "z" miles per hour. Your help is greatly appreciated and thank you for assisting those that never took algebra in school (or at least that I remember.) Click here to see answer by stanbon(57967)

 Question 429047: can someone plss help me i would really appreciate it add or subtract as indicated. write each answer in lowest terms. x-y/5 - x+y/5 Click here to see answer by Gogonati(817)

 Question 429049: can someone plss help me i would really appreciate it add or subtract as indicated. write each answer in lowest terms. x-1/x+6 + x+3/x-2 Click here to see answer by ewatrrr(10682)

 Question 429051: can someone plss help me i would really appreciate it add or subtract as indicated. write each answer in lowest terms. -4/y^2-4 - 3+y/2y-4 Click here to see answer by ewatrrr(10682)

 Question 429139: Hi, Can someone please help me solve 4y=-28+7x I need to find the y and x intercepts and graph. I do not understand how to solve this. Pamela G Click here to see answer by nerdybill(7008)

 Question 429159: can someone help pretty please find the least common denominator. 17. 2m+3/m^2-25 and 4m-2/m^2+3m-10 Click here to see answer by ewatrrr(10682)

 Question 429103: how long will it take a bus traveling at 60 miles per hour to overtake a car traveling at 40 mph if the car had a 1.5 hour head start? Click here to see answer by jorel1380(2518)

 Question 429283: Please help with this word problem: Albert earns \$78 for working 6 hours. Which equation could be used to find the number of dollars, d, that Albert earns in 9 hours? A. 78/d = 9/6 B. 78d - 6+9 C. 6+9 = 78 + d D. 6d = 78 + 9. This is for my nephew, he is in eigth grade excelerated math and did not like my answer. He would like an explanation as to why the other answers do not work as well. He is very intelligent and has been accepted to pre-navel academy. Any help would be appreciated. Click here to see answer by ankor@dixie-net.com(15746)

 Question 429485: Find the amount (future value) of an ordinary annuity of \$1600 per semiannual period for 7 years at 8% per year compounded semiannually. (Round your answer to the nearest cent.) Click here to see answer by mananth(12270)

 Question 429551: Please help! Can you include how you came to the answer as well, so I know how to do it myself in the future. Thanks so much! Identify the type of equation presented in x^2+y^2-4x+12y-6=0 Click here to see answer by Gersid(33)

 Question 429520: I need help solving equations with integers.Can you show me the steps to solving problems like -4-7=x or 8+x=-20.I dont understand how to do any of them or the steps to do it.Think you Click here to see answer by jorel1380(2518)

 Question 429688: Please help me with these two problems! Jose has \$20,000 to invest. He invests x dollars at 4% and the rest at 4.5%. Write an equation for the total amount of money Jose will have in one year. Suppose at the end of the year, Jose has \$20,860. How much money did Jose invest in each account? Thank you sooo much!!! Click here to see answer by stanbon(57967)

 Question 429691: Girl drives or bikes from her house to the park.Her speed when driving is 36mph, and her speed when biking is 12mph. If it takes her 1/2 hr less to drive, how long does it take her to get to the park and how long is the park from her home? Click here to see answer by ankor@dixie-net.com(15746)

 Question 429808: How do you factor Xsquared + 35x +3 = 77 Click here to see answer by stanbon(57967)

 Question 430273: how many ounce of a 15% alcohol solution nmust bemixed with 4 ounces of a 20 % alcohol solution to make a 17% alcohol solution Click here to see answer by stanbon(57967)

 Question 430379: a TV repairman charges a minimum service fee of P350 and P50 per hour, thereafter.Find the repair charge for 5 hours. what is the equation for the relation between the number of hours and the service fee? Click here to see answer by stanbon(57967)