Answer:
(D)
Step-by-step explanation:
The given vector is , the magnitude of the given vector is gievn as:
Putting and , we get
Thus, the length of the given vector is units.
Therefore, option D is correct.
The answer is C.) f^-1 (x) = 2x- 14 /
(-2, 2), (0, 2), (7, 2), (11, 2)
A relation must have no repeating x-values for it to be a function.
Set C does not have any repeating x-values, so it is a function.
Sets A, B, and D have repeating x-values, so they are not functions.
A: (0, 0), (2, 3), (2, 5), (6, 6)
B: (3, 5), (8, 4), (10, 11), (10, 6)
D: (13, 2), (13, 3), (13, 4), (13, 5)
i don't know its ans thank you
0.438
Given the data:
980.9, 1036.5, 1099.5, 1153.9, 1409.0, 1456.4, 1718.4, 1721.2
Coefficient of skewness:
3 * (mean - median) / standard deviation
The mean of the dataset :
Σ(X) / N ; N = sample size = 8
980.9+1036.5+1099.5+1153.9+1409.0+1456.4+1718.4+1721.2
= 10575.8 / 8
= 1321.975
Median :
1/2(n + 1)th term
1/2(9) = 4.5th term
(1153.9+1409.0) / 2
= 1281.45
Standard deviation:
Sqrt[Σ(X - mean)²/ (N - 1)]
Using calculator :
Standard deviation estimate of population = 277.882456
Coefficient of skewness :
3(1321.975 - 1281.45) / 277.882456
121.575 / 277.882456
= 0.4375051
= 0.4375
Using software excel :
Using excel's AVERAGE, MEDIAN and STDEV.P functions, the Coefficient of skewness can be obtained using the formula :
Coefficient of skewness obtained is 0.438
x = 6.
x = 6 as its reflected about the vertical line passing through the point (6,0).
