B=7
3(b-4)+5b=44
3b-12+5b=44
8b=44+12
8b=56
b=7
Step-by-step explanation:
4+6+5=15
15-1=14
2/14
1/7
Answer:

Step-by-step explanation:
We have been given that there are total 9 people who entered the drawing competition. There are 3 prizes to be distributed to the winners. The total number of ways that 3 prizes can be awarded to the 9 people can be determined as 9*8*7 = 504.
The total number of ways in which I win the first prize and my mom wins the second prize would be 1*1*7 = 7.
Therefore, the probability that I win the first prize and my mom wins the second prize would be: 