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

Tutors Answer Your Questions about real-numbers (FREE)

Question 317140:
Click here to see answer by CharlesG2(828)

Question 317384: which of the following is a rational number?
a)
b)
c)
d)
Click here to see answer by nyc_function(2733)

Question 317385: which of the following square roots is an irrational number?
I got D
a)
b)
c)
d)
Click here to see answer by solver91311(16877)

Question 317815: what is the line diagram of the real numbers?
Click here to see answer by jim_thompson5910(28555)

Question 317815: what is the line diagram of the real numbers?
Click here to see answer by stanbon(57307)

Question 318738: How do you find the domain of p(x) = 2x -3 then find the real number of the equation
Click here to see answer by nyc_function(2733)

Question 318838: Prove: For all real numbers a, b, and c, if a + c = b + c, then a = b.
Click here to see answer by Fombitz(13828)

Question 318915: 5+x=x+5
(7+y)+3=7+(y+3)
0+a=a
Click here to see answer by Alan3354(30993)

Question 319194: Let symbol ~ be defined so that a~b equals the smaller of a-b and b-a. For all real numbers a and b, all of the following are true EXCEPT:
a) a~b = b~a
b) a~b = (-a) ~ (-b)
c) a~b < 0
d) a~0 = 0 ~ (-a)
e) If a>b>0, then (a~b)~b = -a
The answer key tells me that the correct answer is C, but it seems to me that using any combination of numbers will always result in a negative response.
Two negatives: -3 - (-5) = 2 *************** -5 - (-3) = -2
Two positives: 5-4=1 ************ 4-5= -1
One negative one positive: 5- (-3)= 8 **************** -3 - (5) = -8
Does 0 count as a real number? Is that why the solution is what it is?
Click here to see answer by jim_thompson5910(28555)

Question 319380: Need help solving this problem: During a game, a person wins 450 points. What is the corresponding number for this sentence?
Click here to see answer by Alan3354(30993)

Question 319387: Please help with: In a triangle ABC, angle B is 4 times angle A and angle C is 7(degrees) less than 5 times angle A.
What are the sizes of the angles?
Click here to see answer by stanbon(57307)

Question 319413: Please help me solve this equation:
Between what two integers does each of the following real numbers lie?
1.) square root of 230
Click here to see answer by rfer(12657)

Question 319620: Express each given irrational numbers as a quotient of two numbers.
Ex. a) 0.1111...
b) 0.585858...
c) -3.173173173..
d) 4.0121212...
Click here to see answer by Alan3354(30993)

Question 320120: Find all zeros, both real and complex. x^3 + 3x^2 + 4x - 8.
Thanks
Click here to see answer by Fombitz(13828)

Question 320120: Find all zeros, both real and complex. x^3 + 3x^2 + 4x - 8.
Thanks
Click here to see answer by solver91311(16877)

Question 321886: perform the indicated operations
9/16 - 1/12
Click here to see answer by Alan3354(30993)

Question 322066: Estimate the length of one side of a square floor, if the area is 4700 square feet. Give the whole number that is closest to the amount
Click here to see answer by checkley77(12569)

Question 322387: please prove that if -3a+5<-16 then a>7
Click here to see answer by Fombitz(13828)

Question 322411: A=(-4,-3,-1,1,3,9)B=(2,3,6,9)
Click here to see answer by Fombitz(13828)

Question 322389: (5^1/2 * 5)* 5^1/2
Click here to see answer by Fombitz(13828)

Question 322854: please help me solve for x by using the quadratic formula
2/3x^2+1/4x=3
Thank you!
Click here to see answer by stanbon(57307)

Question 322875: List in order from the least to the greatest.
2/3,-1/7,1/3,-2/7,-2/3,2/5,-1/3,-2/5,9/8
Click here to see answer by Fombitz(13828)

Question 322889: If the 3rd and 7th term of G.P are 81 and 16 respectively.Find the first 5th term of the G.P
Click here to see answer by Edwin McCravy(8908)

Question 322978: Multiply and Simplify.
Assume variables represent nonzero real numbers.
c^13 * c^0
Simplify and type exponential notation with Positive Exponents.
Thanks!!
Click here to see answer by Fombitz(13828)

Question 324216: how do I solve the following:
AB x CB = _ _ 9
Click here to see answer by Alan3354(30993)

Question 324265: list the irrational numbers

Click here to see answer by Fombitz(13828)

Question 324269: ( 1)^3
- -
( 5)
Click here to see answer by rapaljer(4667)

Question 324930: If a and b are any real numbers such that 0 < a < 1 < b, which of the following must be true of the value of ab ?

F. 0 < ab < a
G. 0 < ab < 1
H. a < ab < 1
J. a < ab < b
K. b < ab

Click here to see answer by Fombitz(13828)

Question 325312: Can you please let me have links to online puzzles and tricky questions on Real number, Quadratic equation and Cyclic circles. Thanks.
With regards,
Chris
Click here to see answer by stanbon(57307)

Question 326046: Find exact values for all real/complex numbers solutions to the equation
x^4+x^3-2x^2-6x-4=0
Click here to see answer by stanbon(57307)

Question 326152: provide a counter example to prove that the quotient of two irrational numbers is irrational
Click here to see answer by Fombitz(13828)

Question 326345: what is the importance of knowing real number system?
Click here to see answer by vleith(2825)

Question 326348: What is the importance of knowing absolute values? Thanks to those man who can answer this!
Click here to see answer by J2R2R(94)

Question 327209: can you give me some number and number system question ?
need now !!!!!!!!!!!!!!11
Click here to see answer by Fombitz(13828)

Question 327161: Prove: For all real numbers a,b and c, if a+c=b+c, then a=b
Click here to see answer by Fombitz(13828)

Question 327328: Please help me solve this question:
Determine whether each statement is true or false and give a counterexample if the statement is false.
A. The set of rational numbers is closed under subtraction.
-10/(-2) = +5 = 5
B. The set of irrational numbers is closed under division.

Click here to see answer by Fombitz(13828)

Question 327764: four consecutive odd integers have a sum of 120 what are they?
Click here to see answer by Fombitz(13828)

Question 327764: four consecutive odd integers have a sum of 120 what are they?
Click here to see answer by Alan3354(30993)

Question 327836: On a sunny day, a tree and its shadow form the sides of a right triangle. If the hypotenuse is 52 m long and the tree is 48 m tall, how long is the shadow?
Click here to see answer by Fombitz(13828)

Question 328973: which of the following is equal to -2(x-5)?
Click here to see answer by Alan3354(30993)

Question 329344: simplify the following algebraic expressions:
3x^3y^4z^-3 / 6x^-1y^3z^-3
Click here to see answer by Fombitz(13828)

Question 329417: for what real number k does 3x^2-k factor as
3(x-2)(x+2)
Click here to see answer by Fombitz(13828)

Question 329474: negative 5r minus 9r plus 8r minus 5
Click here to see answer by nyc_function(2733)

Question 329526: Please simplify as much as possible:
[14-2(8-3(squared))}/6
I do not know how to put the small 2 for squared so I wrote it out. I hope it isn't too confusing.
Thank you!
Shelley E.
Click here to see answer by Alan3354(30993)

Question 329525: Simplify as much as possible
7[x-2(4+3x)]
Thank you,
Shelley E.
Click here to see answer by privani(34)

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