# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 121819: May I have some help with the following equation? (x+1/x)^2 + 4(x+1/x)+ 3=0 Click here to see answer by oscargut(900)

 Question 121857: (3x+6) + (2x-11)= 90 What is the step by step procedure for solving Click here to see answer by checkley71(8403)
 Question 121857: (3x+6) + (2x-11)= 90 What is the step by step procedure for solving Click here to see answer by jecegc(3)

 Question 121906: Find X & SHOW WORK sorry,equation is not from any book. Made by teacher n^2+48=16+12n Click here to see answer by stanbon(57984)
 Question 121906: Find X & SHOW WORK sorry,equation is not from any book. Made by teacher n^2+48=16+12n Click here to see answer by josmiceli(9817)

 Question 122035: Q: For a particular event, 812 tickets were sold for a total of \$1912. If students paid \$2 per ticket and nonstudents paid \$3 per ticket, how many student tickets were sold? Totally stumped!!!! Click here to see answer by josmiceli(9817)
 Question 122035: Q: For a particular event, 812 tickets were sold for a total of \$1912. If students paid \$2 per ticket and nonstudents paid \$3 per ticket, how many student tickets were sold? Totally stumped!!!! Click here to see answer by solver91311(17077)

 Question 122032: Write and expression for the term: The amount of money in cents in a jar containing d dimes and some nickels and quarters, if there are 3 times as many nickels as dimes and twice as many quarters as nickels. I tried to work it out with t being total amount in jar and d=dimes, n=nickels, q=quarters and stating d=3n and n=2q but I cannot put this in an expression that makes sense! Click here to see answer by solver91311(17077)

 Question 122036: please help me slove this problem Slove the problem. Find out how long it takes a \$3000 investment to double if it is invested at 8% compounded semiannually. Round to the nearest tenth of a year. Use the formula A=P(1+r/n)^nt possible anwsers 1.) 8.8 years 2.) 9.2 years 3.) 9 years 4.) 8.6 years thank you for your help Click here to see answer by josmiceli(9817)

 Question 122059: D=-200p + 35,000The supply equation is predicted to be S= -p^2 +400p –20,000Find the equilibrium price. Click here to see answer by ankor@dixie-net.com(15747)

 Question 122152: I am trying to find number concepts on an assignment called Chapter 2 More Number Concept Creatures: Wollygoggles and Other Creatures from 1980 Cuisenaire Company of America book. I am stuck on pg 34 & 35. They are find the common rule for 1) 3 -> 3, 81 -> 9, 100 -> 1, 17 -> 8,and 121 -> 4 and the next one is find the common rule for: 14 -> 4, 25 -> 10, 50 -> 0, 75 -> 35, 111 -> 1. the first number of each is in a circle (the input) and the second number is in a square (the output). Click here to see answer by stanbon(57984)

 Question 122159: My grandson is asking this question and I really don't know how to assist him. He is in another town and called me...so here goes. 8+4=12, but 20+4 does not = 30 Here are the numbers he gave me over the phone and the order in which they are assembled on his sheet: 8 12 20 30 2 3 10 15 I'm not sure where to go with this or even what the RULE is/are, but thought that you might. Thanks Click here to see answer by Edwin McCravy(8999)

 Question 122173: Solve the following system of equations by using the inverse of the coefficient matrix A. (AX=B) x+4y=22 -6x+5y=13 Click here to see answer by Edwin McCravy(8999)

 Question 122137: please help me on this question. I was able to get all the others, i just don't know where to begin..and where to go from there... x-{x-1-[x-2-(x-3-{x-4-[x-5-(x-6)]})]} Click here to see answer by Fombitz(13828)

 Question 122281: Hi. May I have some help with this equation? (16/30)*s + (16/35)*s + (16/20)*s = 17 Click here to see answer by jim_thompson5910(28717)

 Question 122287: 2. The following equation has degree 4 because the highest power of the variable x is 4: x^4 – 3 x^2 + 2 = 0. Explain how one can use the quadratic formula to solve this equation by using a change of variable. Solve this equation completely. Click here to see answer by josmiceli(9817)
 Question 122287: 2. The following equation has degree 4 because the highest power of the variable x is 4: x^4 – 3 x^2 + 2 = 0. Explain how one can use the quadratic formula to solve this equation by using a change of variable. Solve this equation completely. Click here to see answer by solver91311(17077)

 Question 122359: find the slope of a line perpendicular to the graph of each equation. 20. y= -3x 24. y= -8 Write and equation for the line that is perpendicular to the given line and that passes through the given point. 26. y= x-3; (4,6) Hope you reply soon. this is the last chapter for this lesson! Thanks, much appreciated :D Click here to see answer by checkley71(8403)

 Question 122484: Please, help me. I'm block. I wanna see all the steps, please! We don't have a book, the Prof. just gave to us. x-1 3x --- = --- + 0.95 5 4 Click here to see answer by MathLover1(6815)

 Question 122503: Hi May I have some help with this inequality? Solve the inequality. Express the solution using interval notation. abs((x-1)/9) < 2 Click here to see answer by oscargut(900)

 Question 122567: Which is a zero of the function f(x)=x^2+6x-7? Click here to see answer by nivine(1)

 Question 122573: Hello, i'm trying to solve this: x^2-2x-4=0. I mean x to the 2nd power minus 2x minus 4 =0 okay, i tried to FOIL this problem and it doesn't work. please help. Click here to see answer by checkley71(8403)

 Question 122381: Hi May I have some help with the following problem? Solve the inequality. Express the solution using interval notation. abs((x-1)/9) < 2 Click here to see answer by ankor@dixie-net.com(15747)

 Question 122560: find function f such that g(x)= 1/x-5 h=g o f, and h(x)=1/(x^2-5) Thank you! Click here to see answer by stanbon(57984)

 Question 122559: Find and simplify f(a+h)-f(a)/h (that is all over h by the way not just f(a) but the f(a+h) part too. (h cannot be 0) for the function f(x)=2-8x^2 thank you so much! Click here to see answer by stanbon(57984)

 Question 122631: A storekeeper goes to the bank to get \$10 worth of change. She requests twice as many quarters as half dollars, twice as many dimes as quarters, three times as many nickels as dimes, and no pennies or dollars. How many of each coin did the storekeeper get? Click here to see answer by bucky(2189)

 Question 122720: Hi May I have some help with this equation. Solve the equation x + 4| = |3x + 6| Click here to see answer by stanbon(57984)

 Question 122726: how would this story problem work? Char inherited \$30,000 from her great uncle. She invested it in 2 different funds. One earns 5% adn the other earns 6%. If she earned \$1600 last year, how much did she invest in each fund? Click here to see answer by stanbon(57984)
 Question 122726: how would this story problem work? Char inherited \$30,000 from her great uncle. She invested it in 2 different funds. One earns 5% adn the other earns 6%. If she earned \$1600 last year, how much did she invest in each fund? Click here to see answer by checkley71(8403)

 Question 122724: I am so bad at story problems, I can not seem to figure out which equations to use...could someone help? The problem is I went for a bicycle ride on Saturday. I rode for 2 hours on Saturday morning and 1.5 hours on Saturday afternoon. My speed in the morning was 3 miles per hour faster than in the afternoon. If I rode for 41 miles, what was my morning speed? Hint: Let x=speed in the morning Click here to see answer by ankor@dixie-net.com(15747)

 Question 122765: I WANT TO LEARN PRE-ALGEBRA: HOW DO I SOLVE X=8 Click here to see answer by josmiceli(9817)

 Question 122723: I am having a hard time with this question...Solve the following formulas for the given variable The help would be greatly appreciated. Click here to see answer by bucky(2189)

 Question 122823: x/4 - 3x/2 = -1/2 these are fractions Click here to see answer by jim_thompson5910(28717)

 Question 122870: Hi. May I have some help with this inequality? Solve the inequality. Express the answer using interval notation. 0 < |x-5|< 1/2 Click here to see answer by josmiceli(9817)

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