Solve for a
6a-15=72

14 1/2

Step-by-step explanation:

6a-15=72

+15 on both sides

6a = 87

Divide by 6 on both sides

a = 14 1/2

D. 14 1/2

Step-by-step explanation:

First, add 15 to both sides:

6a - 15 = 72

6a = 87

Divide by 6

6a = 87

a = 14.5

Therefore, the answer to your question is D. 14 1/2

Hope this helps!!

- Kay :)

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