Answer:
N=15
Step-by-step explanation:
Becuase math is math
Answer:
Step-by-step explanation:
bc is hypotunuse
therefore 1.2^2+3.9^2=BC^2
4.1(1dp)
Cross multiply and you get 9u=54 then you divide both side by 9 then u = 54/9, u = 6
Commutative - addition.
You're switching a and b to get the same answer. It works with Multiplication too, as you can tell!
