The solution of the system is A. (2, 1)
Step-by-step explanation:
148.Add both not that hard.
Use the Cosine Rule
q^2 = 20^2 + 30^2 - 2^20*30 cos 15
= 140.89
so q = sqrt 140.89 = 11.9 (answer)
Answer:
each side is 36
Step-by-step explanation:
144÷4=36