Answer:
0.8213
Step-by-step explanation:
-This is a binomial probability problem given by the function:

Given that n=21 and p=0.2, the probability that she experience a delay on at least 3 days is calculated as:

Hence, the probability that she experience delay on at least 3 days is 0.8213
11 squared is 121
20 squared is 400
121+400= 521
The approximate square root of 521 is approximately 22.8254
Answer:2*2=4
4^3=4*4*4=64
Step-by-step explanation:
Answer:
82
Step-by-step explanation:
50+32 =82 and this has to be longer so this is me making it longer