Ann and betty together have $60. Ann has $9 more than twice Bettys amount. How much do each have?

Step-by-step explanation:

Let b represent the amount Betty has. Then Ann has 2b+9 and together, they have ...

  b + (2b+9) = 60

  3b = 51 . . . . . . . . . subtract 9

  b = 17 . . . . . . . . . .  divide by 3

Betty has $17 and Ann has the other $43 of the total of $60.

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