The average of these numbers is nine tenths,

, or .9, however you would like to put it.
Answer:
a ^ (1/12)
Step-by-step explanation:
a ^ (1/3)
---------------
a ^ (1/4)
We know that b^ c / b^ d = b ^ (c-d)
a^ (1/3 - 1/4)
getting a common denominator
1/3 *4/4 - 1/4*3/3 = 4/12 - 3/12
a^ (4/12 - 3/12)
a ^ (1/12)
M=18
explication: both of the angles are 90 degrees, 90-33=57, 3(18)+3=57
Answer:
d = 3/7 = 0.429
d = 1
Step-by-step explanation: