Answer: 9.7 seconds
Step-by-step explanation:

Answer:
0.530 (the 0 is not required)
Step-by-step explanation:
this is because another combination would be .35 which is less than .53 so this what i think the answer is.
--hope this helped :))
Answer:3/20
Step-by-step explanation:
Heads=Boy
Tails=Girl
If the first 3 students are boys, all 3 coins must be heads.
Because in 3 of these experiments, the coins all land on heads, and there are 20 experiments completed, 3 out of the 20 experiments are 3 boys; 3/20.