Answer:
d. 1/16
Step-by-step explanation:
Flipping the coin 4 times gives a total of 16 possible outcomes. Only one of those gives 2 heads followed by 2 tails. So the probability is 1/16.
Hope this helps!
it will take about 1/3 of the time (10 minutes)
60
x + 0.30x = 78
1.30x = 78
x = 60
