According to a survey conducted by the Association for Dressings and Sauces, 78% of
American adults eat salad at least once a week. A nutritionist suspects that the percentage is
higher than this. She conducts a survey using a random sample of 300 American adults and finds
that 247 of them eat salad at least once a week.

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

thats not a system of equations, that is a solution

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58