2013
Mathematics
67ca00ce0c643c71d77dee1f
Find the mean of t + 2, 2t - 4, 3t + 2 and 2t.
A.
t + 1
B.
2t
C.
2t + 1
D.
t
Correct Answer: 2t
Explanation
∑x = (t + 2) + (2t + 4) + (3t + 2) + 2t = 8t N = 4 ∴ Mean, x = ∑xN=8t4=2t = 2t
∑x = (t + 2) + (2t + 4) + (3t + 2) + 2t = 8t N = 4 ∴ Mean, x = ∑xN=8t4=2t = 2tTHIS WEEK's
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