The mean of a set of 6 integers is 30. When one of the numbers is removed, the new mean is 34. What was the number that was removed?

Given:

The mean of a set of 6 integers is 30.

If one of the numbers is removed, then the new mean is 34.

To find:

The removed number.

Solution:

The formula for mean is

The mean of a set of 6 integers is 30.

If one of the numbers is removed, then the mean of remaining 5 numbers is 34.

Now,

Removed number = Sum of 6 observations - Sum of 5 observations

                              = 180 - 170

                              = 10

Therefore, the removed number is 10.

  21.3

step-by-step explanation:

multiplying the given equation by c/sin(25°), we get

  c = 9/sin(25°) ≈ 21.2958 ≈ 21.3

we assume "c" is the length of ab, the side opposite angle c in triangle abc.

what are the statements

step-by-step explanation: