Hello,
N is closed for an opération(µ) means that
a,b ∈ N : a µ b ∈N (i suppose so)
Answer (1) ex 2/3 ∉ N
Answer (4) ex 2-3 ∉ N
∀ a,b ∈ N: a+b ∈N is true ; not a answer.
∀ a,b ∈ N: a*b ∈N is true ; not a answer.
Potatoes cost $1.20 / kg. If you buy 0.8 kg, how much are the potatoes? (Answer $0.96)
Answer:
Step-by-step explanation:
-3√2+3√8
=-3√2+3×2√2
=-3√2+6√2
=3√2
Answer:
true
Step-by-step explanation:
The metric system is used for most scientific and medical measurements and all pharmaceutical companies now use the metric system for labeling medications.
Answer:
5 and 4
Step-by-step explanation:
