Answer:
a. 3x^2 = 81
x^2 = 27

Step-by-step explanation:
Answer:
15.05
Step-by-step explanation:
Also, you don't need to add the zeros, they don't mean anything.
Arranging them in ascending order :
21 , 21 , 30 , 44, 49, 52
Median = (30 + 44) ÷ 2
Median = 37 mins
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Answer: Median = 37 mins (Answer D)
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The correct answer is A, -3 degrees Celsius.