# Questions on Algebra: Real numbers, Irrational numbers, etc answered by real tutors!

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 Algebra: Real numbers, Irrational numbers, etc Solvers Lessons Answers archive Quiz In Depth

 Question 112426: 16 divided by (-2) times (-4)over 2to the third power times 4 This is crazy to me just when I thinnk I have it something is wrong. Thanks so much for all your help and time. Click here to see answer by solver91311(18785)

 Question 113624: My son and I can't get the solution to value of a vairable. 8+[5+(6+x)]. How do you combined the numbers to get a solution to x. It is a worksheet on operations with polynomials. Model Problems. Thank you in advance Terrance and Beverly Mays Click here to see answer by jim_thompson5910(29613)

 Question 113814: Twice the square of a positive integer is 12 more than 10 times that integer. What is the integer? 10(x)^2 = x + 12 I know I have to have a formula first. Am I on the right track for the formula in order to solve this problem? Click here to see answer by josmiceli(10616)

 Question 114601: Im trying to help my son, but I cant figure it out. Please Help. Find two consecutive intergers so that the sum of the first and 3/4 of the second is 6. Click here to see answer by checkley71(8403)

 Question 114975: Determine the value that will make the given equation have exactly one rational solution. Kx^2 - 10x = 5 Click here to see answer by HyperBrain(694)

 Question 115555: I really need help with this problem. The problem says to find two consecutive intergers whose product is 90, it must be solved algebraically. Thank You. Click here to see answer by jim_thompson5910(29613)
 Question 115555: I really need help with this problem. The problem says to find two consecutive intergers whose product is 90, it must be solved algebraically. Thank You. Click here to see answer by bucky(2189)

 Question 115682: I do not understand how to do this could someone help please. Thank you so much. Subtract –8.1-(–1.3). Click here to see answer by vertciel(183)

 Question 115719: I need help please I am not sure but I believe the answer -6/0 which I believe is undefined. Am I right? Thanks so much for your help. Perform the indicated operation. 14-20 _________ (4)(3)-12 Click here to see answer by jim_thompson5910(29613)

 Question 115683: I have another here I do not understand how to do. Would someone show me how / Thanks for any help at all. Find the reciprocal of 1/3 (-6-10).Write your answer in simplest form. Click here to see answer by checkley71(8403)

 Question 115872: How do you tell what is a rational number and a irational number? Click here to see answer by MathLover1(7480)

 Question 117002: Solve and express in simplest radical form. 3n^2 - 75 = 0 I think the answer is n = 5; n = -5 but I'm not sure. Click here to see answer by jim_thompson5910(29613)

 Question 117124: Is 1/0 irrational? You are not supposed to divide by zero, therefore, 1/0 cannot be rational, therefore, it must be irrational. Does this hold true? Is it imaginary since it cannot be found on the real number line? Where does it live...irrational, imaginary, neither. Please help. Click here to see answer by jim_thompson5910(29613)
 Question 117124: Is 1/0 irrational? You are not supposed to divide by zero, therefore, 1/0 cannot be rational, therefore, it must be irrational. Does this hold true? Is it imaginary since it cannot be found on the real number line? Where does it live...irrational, imaginary, neither. Please help. Click here to see answer by MathLover1(7480)

 Question 117608: My problem is: 7xy (seven hundred and something) times 4z (forty something) = abcde. the variables are each a different whole number between 0 - 9 - excluding 7 and 4 which is already used. I've found a few things to narrow the problem down - such as the answer should be between 29442 (701 X 42) and 38514 (786 x 49) and that I don't thing y or z can be 0 or 1. - your help is appreciated. Click here to see answer by Fombitz(13828)
 Question 117608: My problem is: 7xy (seven hundred and something) times 4z (forty something) = abcde. the variables are each a different whole number between 0 - 9 - excluding 7 and 4 which is already used. I've found a few things to narrow the problem down - such as the answer should be between 29442 (701 X 42) and 38514 (786 x 49) and that I don't thing y or z can be 0 or 1. - your help is appreciated. Click here to see answer by solver91311(18785)

 Question 118260: x2 + x + sqr root of x2 + x -2 = 0 b4 + 13b2 + 36 = 0 Click here to see answer by stanbon(60778)

 Question 118585: The sum of three numbers is 137. The second number is 4 more that two times the first number. The third number is 5 less than three times the first number. Find the three numbers. Thank you for your help! Click here to see answer by checkley71(8403)

 Question 118691: whatshoul you do with a set of numbers before you find it's mesures of central tendency? Click here to see answer by stanbon(60778)

 Question 118988: the subset of all x e S, S = {1, 3, 6, 7, 10}, suth that x is an odd integer - I know its rather simple but I don't get it, I don't know if I have to find a pattern or what? Help is greatly appreciated thank you. (not sure it its obvious but that e is the element of ) Click here to see answer by solver91311(18785)

 Question 119133: OK, the question reads name the additive and multiplicative inverse for each number. -4 3/5. i dont underdstand inverses to well nut what i do know is that it is basically the reciprocal.correct? so would it be..((additive) 4 5/3 so it would equal 0? and the multiplicative would be... all i know is that you have to get it to equal one so mabey.... 4 3/5 again? thanks for taking your time to answer my question Click here to see answer by Fombitz(13828)

 Question 119141: Solve for x : 1+ 3x/(x+5)(x-2) = 2/(x-5) + 3/(x-2) Click here to see answer by jim_thompson5910(29613)

 Question 120425: I have to change the repeating decimal to fraction. 2.39999999999999999999999999999999999999999999999999999999999999 Click here to see answer by Edwin McCravy(9719)

 Question 120528: The question says find two consecutive whole numbers that each number falls between. Then estimate the number's value. sqrt(31) Thanks Click here to see answer by jim_thompson5910(29613)

 Question 120531: The question says find two consecutive whole numbers that each number falls between. Then estimate the number's value. sqrt(80) Thanks Click here to see answer by stanbon(60778)

 Question 120529: The question says find two consecutive whole numbers that each number falls between. Then estimate the number's value. sqrt(14) Thanks Click here to see answer by solver91311(18785)