Answer:
First off lets note that this is an iscocleles triangle since the 2 base angles are equal. Additionally, we know that the 2 sides adjacent to the base are equal in iscocleles triangles. Therefore, RP=RQ
With that in mind, lets solve:
If RP=RQ then we can make the equation by using substitution
Now, we can solve for x:
Now that we know what x is equal to we can solve for PR
Hope this helped!
Step-by-step explanation:
Answer:
2.0
Step-by-step explanation:
Couldn't really understnd what you wrote but I'll assume it's the standard deviation of a fair, 7-sided die
The standard deviation is just the square root of the variance (which is just the second moment minus the first moment squared)
The first moment (AKA the average is..)
The second moment is..