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:0.25
Step-by-step explanation:
Just type it in a calculator
Answer:
2450 mm³
Step-by-step explanation:
(15×10×7) + [(40+10)×4×7]
2450
Answer:
x+9=4x-4
=) x -4x = -4-9
=) -3x = -13
=) x = 13/3
It is not the form of ax 2 +bx +c =0
