Hello from MrBillDoesMath!
Answer:
The first choice, Pi + (-Pi) = 0
Discussion:
Pi is an irrational number. Saying the irrational numbers <u>are</u> closed under addition means if we add two irrational numbers we will get another irrational number. In our case, Pi + (-Pi) = 0, which is correct, BUT 0 is a <u>rational </u>number. This shows the set of irrational numbers is NOT closed under addition.
Thank you,
MrB
Answer:
3 x 
x 
Step-by-step explanation:
Answer:
Leo bought 4 large coffee cups which total 12 dollars. and the rest were 9 regular sizes which equals to 13 coffees in total.
Step-by-step explanation:
Answer:
the lights will both flicker at the same time at 56 seconds
Step-by-step explanation:
you have to do (7)(8)
