Answer:

Step-by-step explanation:
The possible ranges of x are listed above. Hope this helps! :)
Answer:
Step-by-step explanation:
I'm not doing all of them, so you can learn.
Here's the first three:
9. 6-12x
10. (and 11? dude u need to rephrase) x/(5(x+2))
Answer:
5.48
Step-by-step explanation:
First, we convert all the fractions into improper fractions. 1 3/7 is 10/7, 3 5/9 is 32/9, and 1/2 stays the same. then we find a common denominator, which would be the LCM of 7, 9 and 2, which is 126. Finally, we rewrite the fractions with the common denominator of 56, and we get 180/126, 448/9 and 63/126. adding these together we get 691/126, which is approximately 5.48412698, which we can round to 5.48
Answer:
A.
Step-by-step explanation:
When you simplify (a - b)(a^2 - ab + b^2) you end up a^3 - b^3, instead of a^3 + b^3. The rest all work out.