Algebrastill need some help
posted by Jena .
Homework Help Forum: Algebra
Posted by Jena on Thursday, February 3, 2011 at 7:32pm.
Find the domain of the function.
f(x)=(sqrt x+6)/(2x5)
Write your answer as an interval or union of intervals.
Algebra  David, Thursday, February 3, 2011 at 7:42pm
(6,5/2)and(5/2,infinity)
Algebra  Reiny, Thursday, February 3, 2011 at 7:46pm
the simplest way to describe the domain:
x ? 6 , x ? 5/2
Algebra  Jena, Thursday, February 3, 2011 at 7:52pm
I'm lost

Algebrastill need some help 
helper
For the domain, the denominator can't equal zero.
2x  5 = 0
2x = 5
x = 5/2
So, x cannot equal 5/2
All x not equal to 5/2
For the numerator, you cannot have a negative inside the square root.
x + 6 >= 0
x >= 6
All x >= 6 
Algebrastill need some help 
Jena
I get
(inf,5/2)U[6,infin) but it doesn't look right 
Algebrastill need some help 
helper
Is this a question?
Respond to this Question
Similar Questions

Algebra is my answer right
The onetoone function f is defined by f(x)=(4x1)/(x+7). Find f^1, the inverse of f. Then, give the domain and range of f^1 using interval notation. f^1(x)= Domain (f^1)= Range (f^1)= Any help is greatly appreciated. Algebra … 
AlgebraI'm still stuck
The onetoone function f is defined by f(x)=(4x1)/(x+7). Find f^1, the inverse of f. Then, give the domain and range of f^1 using interval notation. f^1(x)= Domain (f^1)= Range (f^1)= Any help is greatly appreciated. Algebra … 
Algebra
Find the domain of the function. f(x)=(sqrt x+6)/(2x5) Write your answer as an interval or union of intervals. 
Algebra is my answer right
The function g is defined by g(x)=3x^2+6. Find g(5y) Algebra  drwls, Friday, February 4, 2011 at 11:07am 3*(5y)^2 + 6 = __? 
Algebra II
I need to write a polynomial in SIMPLEST FORM having roots 2,2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? 
Math
Posted by Marissa on Thursday, February 19, 2015 at 6:32pm. I am having difficulties trying to do rational expressions. I have to use the words Domain, Excluded Value, Set, Factor, and Real Numbers to show how I got the answer. Can … 
Algebra
Some functions that aren't invertible can be made invertible by restricting their domains. For example, the function x^2 is invertible if we restrict x to the interval [0,inf), or to any subset of that interval. In that case, the inverse … 
Algebradomain
I had to find the domain of a function, and my answer is that x is all real numbers except 5 and 6. How do I write that in interval notation? 
Algebra
Find the domain of the function. Write in interval notation. sqrt(x^2 − 64). For the answer, I got (infinity, 8)u(8, infinity), but that's wrong, and I'm not sure what else to try? 
Algebra
Find the domain of the function. (Write your answer using interval notation.) sqrt(x)/ (4x^2 + 3x − 1) If you set the bottom equal to zero, I got that x can't be 1 or 1/4. But I'm not sure if that's right, or how to write the …