In a survey at a local​ university, 47% of students say that they get less than the recommended eight hours of sleep per night. In a group of 4000 ​students, how many would you expect get eight or more hours of sleep per​ night?

2120 Students

(Sorry if my explanation has more steps then it needs)

Step-by-step explanation:

1% of 4000.

4000/100

=40

47x40=1880

4000-1880 = 2120

3 1/3 x 2 3/5 = 8 2/3

step-by-step explanation:

just multiply the first number by the second number to get your answer.

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