salim had 24 homework problems he completed 12 problems during lunch then he completed 7 more after school

So how many he has left to do???

I think Salim has to finish 5 more problems

Step-by-step explanation:

entering that problem on the tube might get you an 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