Well I don't know where inequalities would come in but the third length would be solved as follows.
a^2+b^2=c^2
10^2+18^2=424

Answer;

I hope this is correct, its what I would do if I had this equation.
Answer:
I'm guessing it could be B or D...I'm not 100% sure.
Step-by-step explanation:
It could be B because 5 can divide 45
It could be D because they are both even numbers.
your whole number is 12, your remainder is .64 for a total of 12.64
Answer:
See below (I hope this helps!)
Step-by-step explanation:
When dividing exponential terms of the same base, we can simply subtract the exponents, therefore:

The answer is b. 2. It is 2, because -10 plus 4 is -6. Then -6 plus 8 is 2.