Answer:
a) 
b) 
Step-by-step explanation:
From the question we are told that:
3 coin are tossed
Therefore
Sample space 
Generally the sets that correspond with the result of at most one tail is therefore given as follows

Therefore
The result is at most one tail when

Answer:
50 mph
Step-by-step explanation:
To calculate averages you add up all the items and divide by the total number of items there is.In this problem were 2 items so you divide it by 2
Add the two numbers
40+60=100
now just divide by 2 because there was 2 drives giving you 50 mph
Hope this helps!
:)
Answer:
we cant just tell that. we need numbers. and problems.
Step-by-step explanation:
Answer:it forms a parallelogram where the green and the red conjoin........ i think that is correct but I am not positive on my particular response. a answer is better than no answer though.....
Step-by-step explanation: