PLEASE HURRY! Rewrite 1/6 book - 2/3 hour as a unit rate?

1/4 books per hour

Step-by-step explanation:

Given:

For  hours, part of book is

To find: Unit rate

Unit rate is the part of book completed in one hour.

So, we use unitary method to determine the unit rate.

Unit rate is given as:

On dividing 2 fractions, the division changes to multiplication and the second fraction is reversed. This gives,

Therefore, the unit rate is  books per hour

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)