(7/8) of an hour is 52.5 minutes.
If you are looking for half of that, it would be 26.25 minutes or 26 minutes and 15 seconds.
Answer:
P(X<=2) = 0.9736
Step-by-step explanation: Please find the attached file for the solution
Answer:
hmm I'm pretty sure a is 3.2
Answer:

Step-by-step explanation:
Number of red balls = 4
Number of green balls = 6
Total number of balls = 6+4 =10
Probability of drawing a green marble is given as
⇒ 
⇒ 
The ball is replaced after drawing.
Probability of drawing a green ball a second time will be:
⇒ 
⇒ 
Thus, probability of drawing 2 green balls with replacement can be given as:
⇒ (Probability of drawing a green marble)
(Probability of drawing a green ball a second time)
⇒ 
⇒ 
Simplifying fraction by dividing numerator and denominator by their GCF.
⇒ 
⇒
(Answer)