How many pounds of chamomile tea that costs $18.50 per pound must be mixed with 17 lb of orange tea that costs $12.25 per pound to make a mixture that costs $14.25 per pound?

no not all of them.

step-by-step explanation:

some of them have a square base.

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

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

or