On average, four students visit the Math and Statistics centre during a 5-minute period. (a) calculate the probability that three students visit the centre during a 5-minute period​

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

80 the answer is 80

step-by-step explanation:

i believe the answer is c.

answer is 8 r5

step-by-step explanation: