Answer:
3
Step-by-step explanation:
Q1
Answer:

Step-by-step explanation:

explanation for second step:
you divide each side by 3 to get rid of the '3' in '3x'
I’m bad at math too sorry i can’t helppp i just need to answer one to ask a question
Answer: 0.2195
Step-by-step explanation:
Binomial distribution formula :-
, where P(x) is the probability of x successes in the n independent trials of the experiment and p is the probability of success.
Given : The probability of that the general population has blood type A = 
Sample size : n=6
Now, the probability that exactly three of them have blood type A is given by :-

Therefore, the probability that exactly three of them have blood type A = 0.2195
Yes those are right. all the steps and answers are correct.