Could someone please help me with this problem?

C

Step-by-step explanation:

Calculate the slope m using the slope formula

m =

with (x₁, y₁ ) = (4, 9) and (x₂, y₂ ) = (12, 20)

m = = → C

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

can you take a photo of the screen?