One option is to distribute the 5 to get 20=-15+5x then add 15 to both sides making it 35=5x and then divide by 5 to make it x=7
The simplified version:
1.61*10^12
Sorry, but I have no idea what scientific notation is...
Answer: B: 4/13, C: 3/4
B:
There were originally a total of 14 characters (including 5 blue characters) from the collection. Since the first player got a blue character, there are now 13 characters to choose from and 4 of them are blue. Therefore, the probability is 4/13.
C: If both the first and second players get blue characters, then there will be 12 characters left, and 3 of them are blue. Now we know that there are 9 characters that are NOT blue. Therefore, the probability is 9/12, or 3/4.
80 copies --> 5 minutes
8 * 80 copies --> 8 * 5 minutes
640 copies --> 40 minutes
Answer: 640 copies
*Hope that helps and enjoy Brainly :)*
4/3
explanation : just write it in fraction form