-3 - 8 (-5x - 1) distributive property

5 +40x

Step-by-step explanation:

Distributive property:a*(b +c) =(a*b) + (a*c)

-3 - 8( -5x - 1) = -3 + (-5x)*(-8) + (-1) * (-8)

                     = -3 + 40x + 8

                     = -3 + 8 + 40x      {combine like terms}

                     = 5 + 40x

step-by-step explanation:

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