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

Algebra ->  Real-numbers -> Questions on Algebra: Real numbers, Irrational numbers, etc answered by real tutors!      Log On


   



Tutors Answer Your Questions about real-numbers (FREE)


Question 186673: sara and Bill live 13.5 miles apart . AT 10:00 AM they both leave their houses and start walking toward one another. THe ratio of Sara's speed to Bill's speed is 5:4. If they meet at 11:45 , how fast were they walking. Thanks
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 186706: This is the last question for an assignment. My mind is mush at this time, can someone please help? It is a three part question. The instructor wants us to write three (3) quadratic equations with a,b,and c (coefficients of x^2, x, and the constant) as: 1: Integers, 2: Rational numbers, and 3: Irrational numbers. I need this by 3 a.m. central time. Please help! This is for Intermediate Algebra and does not come from a book that I know of.
Click here to see answer by jim_thompson5910(35256) About Me 

Question 186769: Which is a irrational number the square root of 5, the square root, of 9, the square root of -1, or the square root of 2 thirds
Click here to see answer by jim_thompson5910(35256) About Me 

Question 187020: Hi I'm trying to work out with the exercises in my txtbook..COuld you please help me solve these problems:
page 449 Question 16
Find all the numbers for which each rational expression is undefined. If the rational expression is defined for all real numbers, so state.
(y+8)/ 16y^2-y-2
page 457 Question 50
Divide as indicated.
(x^2+x)/(x^2-4) divided by (x^2-1)/(x^2+5x+6)
Thanks in Advance
Kattie

Click here to see answer by stanbon(75887) About Me 

Question 187170: Bob's father is 3 times old as Bob.4 years ago,he was 4 times older.How old is Bob?
Click here to see answer by uday1435(57) About Me 

Question 187168: sum of three consecutive numbers is 18.what are these numbers?
Click here to see answer by user_dude2008(1862) About Me 

Question 187695: Hi i'm trying to work out on the practice Test on my txtbook & i'm not sure with my answer can you please help me...
48)Denominators are additive inverses.Add pr subtract as indicated.Simplify the result if possible.
(y-7)/(y^2-16) + (7-y)/(16-y^2)
I did the cross multiplication
(16y-y^3-112+7y^2) / (7y^2-y3-112+16y)
(-y^3 +7y^2 +16y-112)/(-y^3 +7y^2 +16y-112)
what will be the answer is it 1 or 0?
Did I do the right thing? or there is another solution?
Looking forward for your reply.
Thanks

KAttie

Click here to see answer by ptaylor(2198) About Me 

Question 188064: one number is four more than a second number. two times the first number is four more than four times the second number
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 188065: devon purchased tockets to an air show for 9 adults and 2 childeren. the total cost was 192 dollars. the cost of a child's ticket was 3 dollars less than the cost of an adult's ticket. find the price of an adult's ticket and a child's ticket
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 188450: 3(2x-5)=2(3x-2)
Click here to see answer by Alan3354(69443) About Me 

Question 188560: use the order of operations to find the value of each expression
3-9 (-1-6)

Click here to see answer by Mathtut(3670) About Me 

Question 188562: use the order of operations to find the value of each expression
2 3
5(-3) -2 (-2)

Click here to see answer by Mathtut(3670) About Me 

Question 188561: Find the greatest common divisor of the numbers
96 and 212

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 188563: perform the indicated operations, simplify the answer when possible
4square root 2 - 8square root 10 times squareroot5

Click here to see answer by feliz1965(151) About Me 

Question 189996: (3a^2b)(-2ab^3)=
Click here to see answer by jim_thompson5910(35256) About Me 

Question 190160: 7≤4x-2≤-1
Click here to see answer by Mathtut(3670) About Me 

Question 190315: why a2 + b2 cannot be factored.
Click here to see answer by stanbon(75887) About Me 

Question 190934: Classify the given numbers as real and rational, real and irrational, or complex. Remember to simplify BEFORE you classify! Thanks!
I need help!
a.(3)1/2 + 2i
b.3.14
c.π (pi symbol?)
d.(16)1/4 + 6
e.(18)1/3
f.1/6
g.6i
h.3 – (-9)1/2

Click here to see answer by user_dude2008(1862) About Me 

Question 190982: I need help getting this problem solved. I need this by tomorrow at midnight. Please Help!
Select any imaginary number (of the form "a + bi," where a and b are non-zero real numbers), and another number such that the sum, difference, product, or quotient of the two numbers is a real number

Click here to see answer by stanbon(75887) About Me 

Question 191929: Please help me with this on, I am really struggling to complete it, I am not sure how to make fractions in here thw 7w-21 is over 10 and w-3 is over 55w:
Divide and simplify:
7w-21/ w-3/
10 divided by 55w
Thank you!

Click here to see answer by Alan3354(69443) About Me 

Question 192214: In a local area the government intends to reduce the coyote population by 10% each year. If the coyote population is now estimated to be 3,000, how many coyotes will remain after 3 years?
Click here to see answer by Mathtut(3670) About Me 

Question 192213: a piggy bank contains $5.85 in nickels and quaters. If there are 65 coins in all, how many of each type coin is there?
Click here to see answer by checkley75(3666) About Me 

Question 192286: Find the real zeroes of f(x)= 3x^3-x^2-18x=6 DO NOT approximate-use rasicals as nececssary.
Click here to see answer by jim_thompson5910(35256) About Me 

Question 192688: What is an irrational number between 10 and 20?
Click here to see answer by stanbon(75887) About Me 

Question 193449: is the quotient of two irrational numbers always an irrational number? why or why not?
Click here to see answer by orca(409) About Me 

Question 193966: A sum of $1400 is to be divided between two people in the ratio of 3/5. How much does each person receive?
Click here to see answer by RAY100(1637) About Me 
Question 193966: A sum of $1400 is to be divided between two people in the ratio of 3/5. How much does each person receive?
Click here to see answer by Mathtut(3670) About Me 

Question 194132: Determine the type (real or complex) and number of the solutions of each of the following equations. Justify your answer. Please show work.
x^2-8x+16=0
Thank You

Click here to see answer by Mathtut(3670) About Me 

Question 194426: I don't know if this belongs here but...
Can you tell me if this is right? The answer I got 32/21.
8/7*(4/3)
Thanks

Click here to see answer by jim_thompson5910(35256) About Me 

Question 194434: I'm trying to check some answers, can someone help?
Solve by multiplication principle. My answer was x=7/4
-1/2x=-7/8
Then this one was to be solved with the same method. I got x=-9
9x=-81
Am I close? Thank-you

Click here to see answer by jim_thompson5910(35256) About Me 

Question 194673: Is 3 square root 34 rational or irrational?
Click here to see answer by RAY100(1637) About Me 

Question 195329:
Click here to see answer by Mathtut(3670) About Me 

Question 196568: Which is an irrational number?
1. 0
2. 1 over 2
3. radical 3
4. radical 4

Click here to see answer by user_dude2008(1862) About Me 
Question 196568: Which is an irrational number?
1. 0
2. 1 over 2
3. radical 3
4. radical 4

Click here to see answer by Alan3354(69443) About Me 

Question 196799: Factor the expression.
you

Click here to see answer by Mathtut(3670) About Me 

Question 196929: Select any imaginary number (of the form "a + bi" where a and b are non-zero real numbers), and turn it into a real number by using addition, subtraction, multiplication, division, or exponentiation.
Click here to see answer by RAY100(1637) About Me 

Question 197333: Find b^2 - 4ac and the number of real solutions to
equation.
5x^2-7=0

Click here to see answer by Mathtut(3670) About Me 

Question 197949: 3(x-4)<-6+3x
I come up with no solution. Help please. Thanks.

Click here to see answer by solver91311(24713) About Me 

Question 198350: Find the exact solution(s) to each problem. If the solution(s) are irrational, then also find approximate solution(s) to the nearest tenth.
More missing numbers. Find two real numbers that have a sum of 8 and a product of 2.

Click here to see answer by Alan3354(69443) About Me 

Question 198684: 9. a) How many different numbers, including zero, can there be as remainders if 19 is divided into 2?
Am I supposed to know how to find this, or do I need to divide it out? If there is a way to find it without dividing it out, can you show me how?
Thanks.

Click here to see answer by jim_thompson5910(35256) About Me 

Question 198737: Clarify as rational , irrational or complex
(4)^1/2 + 2 My answers rational
6 + 0i complex
30007.413 irrational
3i complex
1 Rational

Click here to see answer by solver91311(24713) About Me 

Question 198994: Classify as rational, irrational or complex
(80)^(1/5) my answer rational
(16)^(1/4) my answer rational
1/9 my answer rational
i^2 complex
don't have the symbol for pie but my answer for pie is irrational

Click here to see answer by jim_thompson5910(35256) About Me 

Question 199017: Which represents an irrational number?
1)2 over 3
2)4 over 9
3)square root of 2 over 3
4)square root of 4 over 9

Click here to see answer by solver91311(24713) About Me 

Question 199187: There is a question here which says '6e, where e=2.718...
How do you solve that and is it Rational or Irrational?

Click here to see answer by solver91311(24713) About Me 

Question 199490: find the root for these radicals tell whether they are rational or irrational
Click here to see answer by solver91311(24713) About Me