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

Tutors Answer Your Questions about real-numbers (FREE)

Question 620766: Show that one and only one out of n, n+2, n+4 is divisible by 3, where n is any positive integer
Click here to see answer by ewatrrr(10682)

Question 620980: convert repeating decimals into a rational number. be sure to reduce answers.
0.888888888888
Click here to see answer by Alan3354(30993)

Question 620970: How many rational numbers are there between 0 and 1? Justify your answer.
Click here to see answer by solver91311(16877)

Question 621644: please help me simplify the expression √ (12-2√35)
Click here to see answer by lynnlo(4155)

Question 621658: what is real number?
what is complex number?
what is rational number?
what is irrational number?
what is whole number?
what is positive and negative numbers?
what is decimal numbers?
pls im hoping you can answer it im very slow about algebra thank you..
Click here to see answer by lynnlo(4155)

Question 621660: what is real number?
what is complex number?
what is rational number?
what is irrational number?
what is whole number?
pls im hoping you can answer it im very slow about algebra thank you..
Click here to see answer by lynnlo(4155)

Question 622260: "Find the real values of y for which the given expression is undefined"

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Question 622019: the record high temperature is 95.6 above zero. what is the corresponding number?

Click here to see answer by richard1234(5390)

Question 623363: find the product of 31 and -76
Click here to see answer by lenny460(764)

Question 623372: 9X3/-21+-13/ the / is suppose to be a straight up and down bar. Please show your work so that I can understand how you got the answer. Thank you very much in advance.
Click here to see answer by Alan3354(30993)

Question 623769: If the numbers 70 and 105 are both multiples of a prime number "n", how many possible values are there for "n"?
Click here to see answer by jim_thompson5910(28545)

Question 624925: can a real number include irrational numbers? explain
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Question 625620: is some real numbers are not rational numbers?

Click here to see answer by reynard2007(52)

Question 625831: the circumference of a compact disk is computed by using the diameter measured to the nearest te
nth of a centimeter and 3.14 as an approximation of pie.
which subset of numbers corresponds best to this situation?
rational numbers
integers- this was my answer
real numbers
whole numbers
can you explain this, I thought irrational numbers were those that represented pie.
Click here to see answer by stanbon(57290)

Question 626680: WRITE A= {5,6,7,8...} TO SET BUILDER NOTATION?
Click here to see answer by jim_thompson5910(28545)

Question 626776: Please help me solve 7ln(3x)=28 I have not done one like this so I,m lost
Click here to see answer by nerdybill(6958)

Question 626776: Please help me solve 7ln(3x)=28 I have not done one like this so I,m lost
Click here to see answer by Alan3354(30993)

Question 627293: what number is 1/3 of the way from 4/5 to 5/6
Click here to see answer by ewatrrr(10682)

Question 627574: find a rational number between 1/4 and 3/5?
Click here to see answer by ewatrrr(10682)

Question 627736: I need to express the quanity as a positve or negative number.
The question is......during a game a person wins 450 points.
What is the corresponding number for this sentence.
Click here to see answer by jim_thompson5910(28545)

Question 627835: Is this statement true or not?
The set of even integers is closed under subtraction? Why or why not?
Please help me im having hard time :(
Click here to see answer by reviewermath(507)

Question 627836: How can I prove this?
4. If a=-a then a=0
1.(a raise to negative 1) raise to -1=a
2. (a/b) raise to -1= b/a
3.abc=0 -> a=0 b=0 or c=0
Thank you so much for helping :)
Click here to see answer by solver91311(16877)

Question 628118: Hi I am so lost and cant figure this out please help me!!!
Find a rational number, r, that satisfies the following conditions. 3 separate answers.
(a) r^2 < r
(b) r^2 = r
(c) r^2 > r
Click here to see answer by mananth(12270)

Question 629469: what is the answer to this problem?
5u+6-3(4u-1)=3(u-1)
Click here to see answer by lenny460(764)

Question 631161: Can you please help me simplify the expression 8(-t)(-t) ?
Click here to see answer by checkley79(3050)

Question 631185: the sum of two consecutive integers os -373. find the larger integer
Click here to see answer by Alan3354(30993)

Question 631228: How many positive integers less than 50 are multiples of 4 but not multiples of 6?
I get 6, but the answer is 8. Please explain. Thank you
Click here to see answer by jim_thompson5910(28545)

Question 631811: if w,x,y,and z are consecutive integers and if w>x>y>z, then (w-z)(y-8)+x-z=?
I keep getting -5 for the answer nit matter what numbers I plug in. The answer is -1.
Thank you
Click here to see answer by KMST(1868)

Question 631948: HEY GOING BACK TO SCHOOL AFTER A LONG TIME... I AM SO CONFUSED ON WHEN TO ADD AND SUBTRACT POSITIVE AND NEGATIVE NUMBERS... CAN YOU HELP SONJA 404 603 6730. THANKS
Click here to see answer by Edwin McCravy(8901)

Question 632152: is the squre root of 42 a rational or irrational number?
Click here to see answer by jim_thompson5910(28545)

Question 632641: (-1/5)3
Click here to see answer by art123(8)

Question 632639: what is the answer to [-8][-5]+[7]2
Click here to see answer by art123(8)

Question 632433: find an irratational number between .757575... and .767676...
Click here to see answer by KMST(1868)

Question 632666: (72÷(-4)+3(-4))/(5-(-5))
Click here to see answer by ewatrrr(10682)

Question 632675: (10-2(5))/(4-5)
Click here to see answer by jim_thompson5910(28545)

Question 632685: 4x⁴ - 7x³ - 12x⁴ + 6x³
Click here to see answer by jim_thompson5910(28545)

Question 633229: Write the rational number as the quotient of two integers in simplest form.
0.7777777777...
Click here to see answer by stanbon(57290)

Question 633613: Armando collects baseball cards. He currently has 48 cards, and buys 5 new cards a week. How many cards will Armando have in 10 weeks?
Click here to see answer by ikeoddy(3)

Question 634225: (25+3)(x-y)
Click here to see answer by lynnlo(4155)

Question 634675: The sum of two consecutive odd integers is -72
. What is the larger integer?

Click here to see answer by Alan3354(30993)

Question 634512: A bicyclist rode from point A to Point B at an average speed of 30 km/hr. Without stopping, he returned from Point B to Point A, following the same route, at an average speed of 20 km/hr. What was the average speed in km/hr over the course of the ride?
Click here to see answer by ankor@dixie-net.com(15646)

Question 635202: Hi, this is a question from a worksheet that I've been working on, it doesn't really make much sense to me. Here it is: Which number below is an element in the set of irrational numbers? √4, 3.45, -8.7, √2
Please help, thanks.
Click here to see answer by jim_thompson5910(28545)

Question 635601: Rational Or Irrational?
-22/-25?
negative 22 over negative 25?
Can you help?
Thanks(:
Click here to see answer by MathLover1(6625)

Question 635600: Is this rational or irrational?
√15
So 15 squared.
Thanks.
Click here to see answer by MathLover1(6625)

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