Answer:
you need to be more specific like which ones are x or y
Step-by-step explanation:
ask it again or comment the specifics
1: 10x-5
2: 6.5w-3y
3: 15+3n
4: not sure
The answer is B. 9
Use cosine rule. In this case, I am using SOH and the right triangle:
sin 60°= a ÷ 6 root 3
(6 root 3)(sin 60°)= a
a=9
22 minutes
40--15 =40+15=55
55/2.5=22
