Answer:
D
Step-by-step explanation:
I got it right on Khan Academy

is already in simplest form because 23 is a prime number, which means that it is only divisible by 1 and itself (23). Hope this helps! :)
Answer: 5.5
Step-by-step explanation:
51x0.15=7.65 7.65 is the 15% of 51
Answer:
A rational number is any integer, fraction, terminating decimal, or repeating decimal. Therefore, -5 is rational.