If the mean of 2, 5, (x+1), (x+2), 7 and 9 is 6. Find the...
If the mean of 2, 5, (x+1), (x+2), 7 and 9 is 6. Find the median
5.5
5
6.5
6
Correct answer is C
Firstly; solving for x
6 = 2+5+x+1+x+2+7+96
cross multiply to have:
6 * 6 = 2 + 5 + x+1 + x+2 + 7 + 9
36 = 2x + 26
36 - 26 = 2x
10 = 2x
x = 5
Median = 7+62
→ 6.5
M varies directly as n and inversely as the square of p. If M = 3, when n = 2 and p =...
Write down the number 0.0052048 correct to three significant figures...
Divide the sum of 8, 6, 7, 2, 0, 4, 7, 2, 3, by their mean ...
If 2x : (x +1) = 3:2, what is the value of x?...
Determine the maximum value of y = 3x2 - x3 ...
Calculate the variance of 2, 3, 3, 4, 5, 5, 5, 7, 7 and 9 ...