1. a preschool has a student to teacher
ratio of 5: 2. which of the following
ratios is equivalent to this ratio?
a 45 teachers to 18 students
b 45 students to 18 teachers
c 35 students to 10 teachers
d 10 students to 7 teachers

B

Step-by-step explanation:

45 students to 7 teachers

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