Answer:
-20
Step-by-step explanation:
(-a/2=10)/-1
=a/2=-10
a=-10*2
a=-20
Answer:this is what I got 1977326743
Step-by-step explanation:
you multiply 7x7x7x7x7x7= 117649
Then 7x7x7x7x7= 16807
117649x16807= 1977326743
Answer:
-768.21
Step-by-step explanation:
<em>I hope this helped you! Have a great day!</em>
From the given discrete distribution, we have that:

<h3>What are the mean, the variance and the standard deviation of a discrete distribution?</h3>
- The mean of a discrete distribution is given by the sum of each outcome multiplied by it's respective probability.
- The variance is given by the sum of the difference squared between each observation and the mean, divided by the number of values.
- The standard deviation is the square root of the variance.
In this problem, the distribution is:



Hence, the mean is:

The variance is:

The standard deviation is:

More can be learned about discrete distributions at brainly.com/question/24855677