<u><em>Both the statement and its contrapositive are true. </em></u>A right angle will always be 90 degrees, so both are true.
300 grams = 0.3 kilograms
The answer to this question is a
Answer:
Dan is correct
Step-by-step explanation:
From the question, we have:

Required
The average
The average hour is calculated using:

So, we have:



<em>Dan calculated the mean as 3; while Bret calculated the mean as 4.</em>
<em>Hence, we can conclude that Dan s correct</em>