Which phrase matches the expression 2(6 + 3n)? A. Two times a number plus three times a number.
B. The sum of 12 and three times a number.
C. Two times the sum of six and three times a number.
D. Three times a number increased by six.

C. Two times the sum of six and three times a number

Step-by-step explanation:

three times a number=3n

six=6

the sum=+

two times= 2()

it will give us 2(6+3n)

B

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