Answer:
Difference between standard score and raw score
In statistics, the standard score is the number of standard deviations by which the value of a raw score (i.e., an observed value or data point) is above or below the mean value of what is being observed or measured.
Step-by-step explanation:
normal and rare are same
Answer:

Step-by-step explanation:

Use the distibutivve property to multiply -6 by 1.4 - r

Then move over 6r to the front

It is acute isosceles triangle
Since both 3x and 6x have the variable x in it, we can just go ahead and add 3 and 6.
3x+6x=9x