Two correct answers:
9 + x
x + 9
Or you can say
x - -9
or
9 - -x
The midpoint, if the endpoints are (x₁,y₁) and (x₂,y₂):
The midpoint of AB is (4,3).
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.
43.0 or if your changing it to kilograms 0.00056 kilograms would be the answer.
The answer is 492.126 :) Hope it helps!
