Answer:
x=7/30
Step-by-step explanation:
3/10-1/15
Both the numerator and the denominator can be easily divided by 9. so you get:
2/10
as you can tell it can still be simplified. both the numerator and denominator can be divided by 2. so your final answer is
1/5
9514 1404 393
Answer:
6.64
Step-by-step explanation:
Perhaps you have ...

_____
Here, it is convenient to factor out 10^-19. If you like, a calculator or spreadsheet can figure this for you.
Answer:
10
Step-by-step explanation:
A rational number is 9.
When you multiply 0.9x10 you get the sum of 9.
9 is a rational number because it is a perfect square and an integer.
I hope this helps you understand :)