Is 8 1/4 an irrational number?

Yes it is why beacuase it can be written into a fraction which makes it an irrational number!

Hope it helps brainiest if it did thank you:)

Step-by-step explanation:

idk this answer sorry cant on this one.

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