System of inequalities

mathwannabe

Junior Member
Joined
Feb 20, 2012
Messages
122
Hello everybody :D

I really need to know if I did this right, but I have nowhere to check my answer:

1) How many whole numbers for X satisfy the following system of inequalities:

\(\displaystyle \dfrac{x+8}{x+2}>2\)

and

\(\displaystyle \log_{10}{(x-1)}<1\)

For the first inequality I found that \(\displaystyle -2<x<4\) and for the second one \(\displaystyle 1<x<10\). So the intersection of those two would be \(\displaystyle 1<x<4\).

There are two whole numbers for X that satisfy the system.
 
Hello everybody :D

I really need to know if I did this right, but I have nowhere to check my answer:

1) How many whole numbers for X satisfy the following system of inequalities:

\(\displaystyle \dfrac{x+8}{x+2}>2\)

and

\(\displaystyle \log_{10}{(x-1)}<1\)

For the first inequality I found that

\(\displaystyle -2<x<4\) and for the second one

\(\displaystyle 1<x<10\).

That should be 1 < x < 11

So the intersection of those two would be \(\displaystyle 1<x<4\).

There are two whole numbers for X that satisfy the system.

Correct - except as shown
 
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