The figure below is parallelogram. Find the measure of th
variable.

D

Step-by-step explanation:

u = 4 since 2u - 1 = 8 - 1 = 7

t = 3 since 5t + 1 = 15 + 1 = 16

and 7t - 5 = 21 - 5 = 16

Hope that helps!

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