Again set a proportion
x/4=35.25/1
=x=4(35.25)
x=141
Therefore the boat traveled 141 kilometres.
The answer is C.
Answer:
1.25
Step-by-step explanation:
-3/4+2=1.25
Answer:
The sample size required is 2500.
Step-by-step explanation:
z-score:
In function of the margin of error M, the z-score is given by:

In this question, we have that:

So






The sample size required is 2500.