Answer:
0.25
Step-by-step explanation:
we have

we know that

substitute

Remember that

so

Option "D" would be your answer.
- KJ, JL, LK
Answer:
The expected value of random variable X is often written as E(X) or µ or µX.
Step-by-step explanation:The expected value is the 'long-run mean' in the sense that, if as more and more values of the random variable were collected (by sampling or by repeated trials of a probability activity), the sample mean becomes closer to the expected value.
Answer:
Option B.
Step-by-step explanation:
The given expression is

We need to find the simplified form of given expression.
Taking out GCF from the numerator.

Cancel out common factors.

The expression
is the simplified form of given expression.
Therefore, the correct option is B.
6x + ( 3x - 9) = 90°( being complementary angles )
6x+3x -9 = 90°
9x = 90° + 9
x = 99 / 9
x = 11