When u do a problem like this- 9+(-8) -does the -8 change to a positive 8 and does it become subtraction bc of the double negative rule?

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

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!