Combine like terms for -2r + s + 4r - 5s

2r-4s

Step-by-step explanation: Combine the -2r + 4r gives you 2r

combine s with - 5s is -4s

you would have to sell 24 bracelets.

step-by-step explanation:

84/3.5 = 24

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