SOLUTION: Find all the numbers for which the rational expression is undefined.
I got to the point that I rewrote the problem as:
7z+5 = 0
But, I'm stuck now. I know I should be abl
Algebra.Com
Question 127296: Find all the numbers for which the rational expression is undefined.
I got to the point that I rewrote the problem as:
7z+5 = 0
But, I'm stuck now. I know I should be able to solve for z at this point, but I keep getting the wrong answer. What could I be doing wrong? Did I set the problem up wrong to begin with?
Found 2 solutions by checkley71, jim_thompson5910:
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
7z+5=0
7z=-5
z=-5/7 answer. IF you got this far correctly.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Well if we solve for z, we get...
Start with the given equation
Subtract 5 from both sides
Combine like terms on the right side
Divide both sides by 7 to isolate z
Reduce
--------------------------------------------------------------
Answer:
So our answer is (which is approximately in decimal form)
However, it will help if you post the original problem to see where you went wrong
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