# Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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 Algebra: Evaluation of expressions, parentheses Solvers Lessons Answers archive Quiz In Depth

 Question 448169: n divived by 32. try to n alone n + 17 n - 29 6 x n Click here to see answer by Dorothy Belt(1)

 Question 448414: How to simplify this... 3x^2 - 5x + 2 - 3x^2 + 4x Click here to see answer by edjones(7569)

 Question 448944: In 2007, Europe and the United States together had installed wind turbines capable of producing about 60 thousand megawatts of electricity. Europe’s wind-turbine capacity was four times that of the United States. What was Europe’s wind-turbine capacity in 2007? Click here to see answer by jorel1380(2518)

 Question 449636: Evaluate and explain the following expression. (xy)3 if x=4 and y=6 Click here to see answer by jim_thompson5910(28715)

 Question 449694: How do I evaluate 6+(-10)+(-4)+3? Click here to see answer by TheDoctor(14)

 Question 449696: How do I evaluate 6+(-10)+(-4)+3? How do I evaluate -5+2+(-7)+0? Click here to see answer by TheDoctor(14)

 Question 450269: Volume of cone: Base is 20ft H is 10ft Click here to see answer by rfer(12730)

 Question 450327: #1. Do you know how to solve 4r + 5r = 45 #2. Do you know how to solve 2a + 9a =88 #3. Do you know how to solve r dicided by 3 - r divided by 5 = 4 divided by 15 #4. Do you know how to solve 7c divied by 10 - c divided by 5 = 9 divied by 2 Click here to see answer by rfer(12730)

 Question 450717: 4sqrt(75) Click here to see answer by jim_thompson5910(28715)

 Question 452312: Solve the equation. If it is an identity (all real numbers) or a contradiction (no solution), so state. 4x + 3 + 3x = 8x + 3 – x Click here to see answer by Gogonati(817)

 Question 452716: Factor x^2+6x+9 Click here to see answer by jim_thompson5910(28715)

 Question 453905: (xsquare-144) = (x+12) (?) Click here to see answer by algebrahouse.com(1079)

 Question 454331: -7-{(7-4)-(-6-4)} simplfy expression Click here to see answer by algebrahouse.com(1079)

 Question 454621: is 28/9 in simplify Click here to see answer by rfer(12730)

 Question 455278: Evaluate (4x+4)(7x-3) Click here to see answer by rfer(12730)

 Question 456139: Obtain the general solution y lnx lny dx + dy = 0 Click here to see answer by robertb(4012)

 Question 456138: Obtain the general solution dr = b(cosx dr + rsinx dx) ANSWER: r= c(1 - bcosx) Click here to see answer by robertb(4012)

 Question 456384: Please HELP, how do you solve the following problem: -3 + ((5(8-6))/2+45)/5 Click here to see answer by richwmiller(9144)

 Question 456700: Please answer this question. Find b: 5a/c - y - d/b = z or in other words.... 5a over c minus y minus d over b equals z. I hope this is not confusing.. Thanks again. Click here to see answer by ankor@dixie-net.com(15746)

 Question 457093: what is the answer to 5+7x=11+9x could you show me through it? Click here to see answer by algebrahouse.com(1079)

 Question 457451: If 7 more than 3x a number is added to a diffrence of 5x a number and 10 the resust is 3o find the number. Hi I am trying to help my daugghter and I need help. #2 how much of a 50 % acid Solution should be combined with 10% acid solution to make 200 ounces of a 40% solution. #3 twice the diffece of a number and eight is equal to three times the sum of the number and 3. Find the number. If you can show the work so I will be able to learn as well as show my child. Thank you. marjorygregory@gmail.com Click here to see answer by stanbon(57967)

 Question 458029: subtract 5x^2-9 from 7x^2-x+1 Click here to see answer by poliphob3.14(115)

 Question 458238: a=(a+b+c)/3 for c Click here to see answer by Alan3354(31519)

 Question 458301: Hi I submitted questions but I never recived a confirmation e mail so I will re submit. I am having trouble with a few problems I do not know if I am setting them up the right way. # a number increased by two -third is 35 find the number. # 2 twice the diffrence of a number and 8 is equal to three times the sum of the number and 3. Find the number Click here to see answer by mananth(12270)

 Question 458319: I have the answer to this. Division of polynomial but I think I am messing up the steps. (#1)1-3x^2/x+2 answer -3x+6-11/x+2. (#2) the product of twice a number and three is the same as the diffrence of five times the number and 3/4. Find the number. (#3). Solution or equation, I have the answer need help setting it up. x-3/7=-2: -11 thank you very much. A greatful mom. Click here to see answer by Edwin McCravy(8999)

 Question 458356: ∫a^2 dx (given log 10^2 = 0.3010) Click here to see answer by Alan3354(31519)
 Question 458356: ∫a^2 dx (given log 10^2 = 0.3010) Click here to see answer by richard1234(5390)

 Question 459322: Determine whether the statement is true, false, or sometimes true. If x is positive and y = -x, then xy2 is positive. I believe it is false but I want to make sure Thank you :) Click here to see answer by edjones(7569)

 Question 459315: Compute the value of the given expression.│4│ I think the answer is -4 but I am not sure if that is correct. thank you :) Click here to see answer by richard1234(5390)

 Question 459435: 1 − 5 [ (4 − 7) − (3 + 4) ] + 6 need help to solve thank you Click here to see answer by edjones(7569)

 Question 459719: g(x)=5^x;find g(-2) Click here to see answer by poliphob3.14(115)

 Question 460110: 3x^2 + 4y^2 - ( 5x^2 - 7y^2 - 1) how do I solve this? I am way lost! Click here to see answer by jim_thompson5910(28715)

 Question 460494: 6(r - 1) + 5(r + 4) Click here to see answer by rfer(12730)

 Question 460622: 0.4p+0.2=4.2-7.8-0.6p Click here to see answer by rfer(12730)

 Question 460865: Find a number which decreased by 18 is 5 times its opposite. Click here to see answer by poliphob3.14(115)
 Question 460865: Find a number which decreased by 18 is 5 times its opposite. Click here to see answer by stanbon(57967)

 Question 460935: Find the domain of the function, I just do not get it! g(x)=6/2-5x Click here to see answer by JimboP1977(308)

 Question 460946: the sum of digits of a two digit number is 15.if the number form by reversing the digits is less than the original number by 27.find the original number. Click here to see answer by sudhanshu_kmr(1152)

 Question 462116: subtract (x^2+5x-2)-(x^2-3x+5) Click here to see answer by MathLover1(6812)
 Question 462116: subtract (x^2+5x-2)-(x^2-3x+5) Click here to see answer by solver91311(17077)

 Question 462318: I would like to submit a question on how to simplify an expression but I dont have any idea of how to write it via the computer. Click here to see answer by rfer(12730)