Answer:
2 sqrt(2)
Step-by-step explanation:
To simplify a square root
sqrt(8)
sqrt(4*2)
sqrt(4) sqrt(2)
2 sqrt(2)
Answer:
Dependent Event
Step-by-step explanation:
Assume that are 10 balls, such that:


If the balls are replaced after taken, the probability is:


This is referred to as independent event; because each selection do not affect the next or previous selection
However, if the balls are not replaced, the probability is:


We subtracted 1 because there is a reduction in the number of balls when the red ball is not returned.
This is referred to as independent event; because a selection affects the next selection
Answer:
45 degrees
Step-by-step explanation:
you would do 20-(-25) then that turns to 20+25 and you get 45
The interquartile range is 4