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

Tutors Answer Your Questions about real-numbers (FREE)

Question 916115: Twin primes are prime numbers that differ by 2. Find a irrational number between twin primes 5 and 7

Click here to see answer by Fombitz(32388)

Question 916115: Twin primes are prime numbers that differ by 2. Find a irrational number between twin primes 5 and 7

Click here to see answer by Edwin McCravy(20055)

Question 916360: Is -1 a rational, irrational, natural, integer, or whole number?
I think it is rational an integer but I'm not sure if it fits into any other category.
Click here to see answer by Edwin McCravy(20055)

Question 917676: Express in simplest form
Thanks so much!
Click here to see answer by josgarithmetic(39617)

Question 917931: Is the square root of 5 a rational number?
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Question 917931: Is the square root of 5 a rational number?
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Question 919015: square root of -12 times the square root of -15
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Question 919015: square root of -12 times the square root of -15
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Question 919015: square root of -12 times the square root of -15
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Question 919520: Let "a" be any real number. Will the system always, sometimes, or never have a solution? Explain.
y=ax
y=ax+4
Click here to see answer by reviewermath(1029)

Question 919940: Nancy made the following statement:
The range of f(x) = ax + b is the set of all real numbers given that a and b are real numbers.
Which produces a counter example to her statement?

Click here to see answer by josgarithmetic(39617)

Question 919961: Students were asked to write an algebraic expression for the sum of three consecutive natural numbers. One student wrote
x + (x + 1) + (x + 2) = 3x + 3. Another wrote (x - 1) + x + (x + 1) = 3x. Explain who is correct and why.
Click here to see answer by josgarithmetic(39617)

Question 920944: Find a polynomial of degree 3 with the given number -1/3, 0, 2
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Question 920806: what are the applications of real numbers

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Question 922150: what is the square root of -1
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Question 923585: hi there I have a question trying to find the answer to (x-2 y4)-2 actually the -2 should be to the power of x and the -2 outside the parenthesis is also to the power of -2 I just don't know how to write it properly

Click here to see answer by Alan3354(69443)

Question 923623: If 2/3 of a pound of candy costs 0.64 cents. What is the cost of 1 and a half pounds of candy?
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Question 923623: If 2/3 of a pound of candy costs 0.64 cents. What is the cost of 1 and a half pounds of candy?
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Question 923623: If 2/3 of a pound of candy costs 0.64 cents. What is the cost of 1 and a half pounds of candy?
Click here to see answer by josmiceli(19441)

Question 923645: I need help with this question, my mind is blank. 5(4z)-1/2z =234
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Question 923839: What is the square root of -1
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Question 923839: What is the square root of -1
Click here to see answer by Alan3354(69443)

Question 923778: A triangle has sides of 4, 9, and 12. In a similar triangle the shortest side is 12 and the longest is x. (a) write a proportion that models the situation
(b) solve the proptiortion for x
Click here to see answer by math-vortex(648)

Question 924953: what subset does -1 belong to
Click here to see answer by jim_thompson5910(35256)

Question 924863: For what values of 'a' does the equation 45ax-27=3x^2 not have 'real roots'?
Working it out on an online calculator, i get all values below ( and not including) 0.4
Struggling with this part, any help will be greatly appreciated
Click here to see answer by Fombitz(32388)

Question 926827: The sum of two numbers is 101. If four times the smaller number is subtracted from the larger number, the result is 6. Find the two numbers
Click here to see answer by ewatrrr(24785)

Question 927079: What two numbers multiply to 192 and add up to -28?
Click here to see answer by TimothyLamb(4379)

Question 927325: What are the real numbers from the list:
-13, 0, 60, 9.33, square root 13, square root 49, 7 1/4, 19/49, 1.2626626662
Click here to see answer by brysca(112)

Question 930209: If 3x^2-6=y for all real numbers x, then X^2-2=

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Question 930311: find a number that is exactly halfway between 0.75 and 1
Click here to see answer by ewatrrr(24785)

Question 930570: Please help me out in solving this question:
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Question 931025: For each question below state whether the statement is always true (no matter what x is), sometimes true (depending on what the value of x is), or never true.please help me solve this.
x > -x
|x|> x
x^2 <0
x^2> x
x^-3=1/x^3
Click here to see answer by richard1234(7193)

Question 931737: The sum of three consecutive integers is 72. What is the first consecutive integer?
Click here to see answer by rfer(16322)

Question 932612: What is the domain and set notation for this rational expressions?
5m^2+m/7m
Click here to see answer by stanbon(75887)

Question 932731: In a museum, the ratio of adults to children is 11 to 12. If there are 115 people in the museum, how many children are there?
Click here to see answer by TimothyLamb(4379)

Question 933314: The difference between the two numbers is 48. The ratio of the two number is 7:3. What are the two numbers?
Click here to see answer by stanbon(75887)

Question 933316: Help! How to find out all the possible outcomes for a sum of four numbers(0-9) = 20 ?
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Question 934409: Using long division, find the quotient of 4 divided by 6? Show your work
Click here to see answer by richard1234(7193)

Question 934585: In which quadrant does the solution of the system fall?
x+y = 4
2x - y =2
I
II
III
IV
Click here to see answer by Alan3354(69443)

Question 934636: When solving a system of equations, how do you determine which method to use?
Click here to see answer by jim_thompson5910(35256)

Question 886446: What is the real number between 3 1/8 and 3 2/8 ?
What is the real number between 4.14 and 29/7 ?
What is the real number between 1/8 and 1/4 ?
Click here to see answer by tommyt3rd(5050)

Question 914691: 8(y+4)-15=27-2(3y-7)
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Question 884842: how to represent √7 on real line
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Question 896223: is irrational , subtraction closed or open?

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Question 936221: Do two distinct integers exist with the property that their sum is equal to their product? Please explain your reasoning!! Thank you.
Click here to see answer by josmiceli(19441)

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