Answer:
PK=8.49m
Explanation:
We have sine formula

By sine formula we have

We have PS = 12, ∠P=105° and ∠S=30°, so ∠K=180°-(105°+30°)=45°
Substituting
a rational number is any number that can be expressed as a fraction, such as 2, -3, 2/3, etc.
So, basically, any non-repeating number between 31.5 and 31.6 should work.
Examples: 31.51, 31.52, 31.568, 31.599
I recommend 31.55 because it is simple and I have a fraction for it here: 361/20
Answer:
6 : 5
Step-by-step explanation:
Rate = 
But Rate is also equal to number of lawns mowed in a certain amount of time.
Since ratio should always be in terms of simple whole numbers.
If 6/5 lawns are mowed in 1 hour, then,
6 lawns will be mowed in:
=
= 5 hours.
therefore, 6 laws will be mowed in 5 hours.
Ratio of lawns to hours in 6:5
Rate = 57/6
This will aquire minutes per mile
Thus,
One mile = 19/2 or 9.5 minutes. :)