B. Operating systems! It manages hardware, software resources, and common services for computer programs.
The answer for this question is True.
Probability that the 7th grader is a boy = number of boys/(total kids) = 4/(4+4) = 1/2
Probability that the 8th grader is a boy = 5/(5+7) = 5/12
Probability that both are boys = 1/2*(5/12) = 5/24 or 20.8%
I hope this helps!
Do you have to pick more than one answer?