# 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 121435: Determine those real numbers a for which the opposite of a is the same as the reciprocal of a. Click here to see answer by stanbon(57246)

 Question 121531: ok im stuck on what to do next heres the problem and what i have so far problem: 3/x^2+4x-5 minus 2x/x-1= here's what i have so far i found the LCD which is (x-1)(x+5) 3/(x+5)(x-1)minus 2x(x+5)/(x-1)(x+5)= 3-2x^2+5x/(x-1)(x+5) and there is where i got stuck! thanks in advance! Click here to see answer by algebrapro18(206)

 Question 121569: if the moon 202 x 10 to the 5th power miles away and the rocket travels 5.5 x 10 to the 3rd power mph, how long would this trip take? Click here to see answer by checkley71(8403)

 Question 121568: how many real solutions are there for 0= x to the second power + 8x + 16 Click here to see answer by checkley71(8403)

 Question 121856: what names apply to the square root of 35 Click here to see answer by solver91311(16868)

 Question 122494: I need help with the following Write the following in roster form: Set N is the set of natural numbers between ten and sixteen Click here to see answer by Fombitz(13828)

 Question 122499: I need help with the following. I know that I've asked previous questions today. I have tried doing all of the questions I've asked, but I'm having a hard time with them. Given A = {1, 2, 3}, B = {3, 4, 5, 6,}, and C = {3, 5, 7}. Evaluate each set a) A ∩ B b) A ∩ C c) A U C d) B U C e) (A U B) ∩ C f) A U (B U C) g) (A ∩ B) ∩ C h) (A ∩ B) U C Click here to see answer by Fombitz(13828)

 Question 122495: I need help with the following For sets A and B, determine whether A = B, A is a subset of B, of B is a subset of A: A = {x| x є N and 13 < x < 18} B = {12, 13, 14, 15, 16, 17, 18} Click here to see answer by Fombitz(13828)

 Question 122497: I need help with the following Given U = {l, m, n, o, p, q, r, s, t, u, v, w}, A = {l, m, n, o, p, q}, B = {n, o, r, s, v, w}, and C = {l, m, p, q, r, t}, find (A′ U C′) ∩ B′. Click here to see answer by bcpm36(2)

 Question 122542: I just need to know if I got this answer correct. My answer is 53. Here is the problem. A survey of a group of people produced the following results: there were 25 people with brown eyes and 15 people with blonde hair. If 10 people had both brown eyes and blonde hair and 23 people had neither, how many people were interviewed? Click here to see answer by stanbon(57246)

 Question 122885: The sum of two numbers is 76. The second is 8 more than 3 times the first. What are the two numbers? Click here to see answer by jim_thompson5910(28504)

 Question 123053: What is the slope of the line with the equation 2x+3y+6=0? please explain how you did it Click here to see answer by checkley71(8403)

 Question 123513: Find 3 consecutive multiples of six such that 4 times the first exceeds twice the third by 12. Click here to see answer by ankor@dixie-net.com(15638)

 Question 123675: what is percent of 40 out of 73? i dont understand. do i have to make a proportion. how do i make a proportion? Click here to see answer by checkley71(8403)

 Question 124335: explain what real numbers are solutions of x>1 Thank you Click here to see answer by BrittanyM(80)

 Question 124500: I need to find integer replacements for the following: 2< [x] < 5 Please show me Click here to see answer by checkley71(8403)

 Question 125145: For three consecutive odd integers, the sum of the least and the greatest is 146. What is the sum of all three integers? I don't even know where to start. Thank you for you time. Click here to see answer by josmiceli(9661)
 Question 125145: For three consecutive odd integers, the sum of the least and the greatest is 146. What is the sum of all three integers? I don't even know where to start. Thank you for you time. Click here to see answer by bucky(2189)

 Question 125249: is 2 over 7 an irrational # or rational # Click here to see answer by dolly(163)

 Question 125336: Are all real integers whole numbers? Does the set of real numbers correspond to all points on the number line? Click here to see answer by jim_thompson5910(28504)

 Question 126913: The directions state name all of the sets of numbers to which each real numbers belong. Let N = natural numbers, W = whole numbers, Z = intergers, Q = rational numbers, and I = irrational numbers. 18#. 0.131313 what is the answer to this question. I do not understand what the difference in these are could you please explain it to me? Click here to see answer by Fombitz(13828)

 Question 126872: use the formula h = rt - 4.9t2 a projectile is fired upward with an initial speed of 2940 m/s. After how many minutes does it hit the ground? how do we figure this out? we are stuck! thanks Click here to see answer by Fombitz(13828)

 Question 127016: if k = 0, then the solution set of : 20-x < k is, Click here to see answer by jim_thompson5910(28504)

 Question 127533: which of them are rational or irrational. 3*3.142,2/3.142,square root of 3,square root of16-9, Click here to see answer by MathLover1(6622)

 Question 127854: A rational number is ___always____a real number a. always b. sometimes c. never Click here to see answer by solver91311(16868)
 Question 127854: A rational number is ___always____a real number a. always b. sometimes c. never Click here to see answer by 136493(1)

 Question 128449: How do you turn the irrational number 108 1/3 into a rational number? Click here to see answer by stanbon(57246)

 Question 129430: I have forgotten!! 1. Name the place value of the 8 in 18,492. 2. 2x(14x+12)/223. 3 and 1/2 / 1/2=? Click here to see answer by checkley71(8403)

 Question 130922: Hi! For this it says to solve and cheack each of the following. The problem is: 3a -2 - = - The answer that I got for it was (a), but I need help checking it, 7 5 please help, Thank You=) Click here to see answer by stanbon(57246)

 Question 130914: Please see if I'm doing this right - very rusty with algebra..... Question: Simplify: (2x - 7)-(5 + 4x) + (3x - 8) 2x - 7 - 9x + 3x - 8 (combining like terms - add 2x - 9x + 3x) -4x - 15 Do I have the correct answer? Click here to see answer by Earlsdon(6287)

 Question 130944: I am having trouble with this question it asks: The sum of a number and its reciprocal is 10. What is the number? It also says I need to cheack. - 3 Please and Thank You=) Click here to see answer by jim_thompson5910(28504)
 Question 130944: I am having trouble with this question it asks: The sum of a number and its reciprocal is 10. What is the number? It also says I need to cheack. - 3 Please and Thank You=) Click here to see answer by solver91311(16868)

 Question 130946: The answer I got for this was 1, but I am not so sure about it. The question is:,,,,,,,,,,,,,,,,,,,,, - one third of a number is,,,,,,,,,3 5 less than half of the same number. What is the number? Than it says to cheack it. Please and THank you=) Click here to see answer by solver91311(16868)

 Question 131025: Hi! I am having difficulty with this particular question it asks to: Solve and cheack each of the following. For this problem the answer that I got for it was 24(x+3)=32, though it was wrong. The problem is: 24 72 -- = -- x-3 x+3 Please and Thank You=) Click here to see answer by pug912(10)