Percent: 30%
decimal: 0.3
fraction: 3/10
Use 3 to multiply the numbers
7/3*3/3
21/9
21:9
Answer:
There is a 14.71% probability of teacher picking all 3 girls.
Step-by-step explanation:
Initially, there are 18 students, of which 10 are girls. So there is a 10/18 = 5/9 probability that the first student chosen is a girl.
Now, since the first student chosen was a girl, there are 17 students, of which 9 are girls. So there is a 9/17 of the second student chosen being a girl.
Both students picked were girls. Now there are 16 students, of which 8 are girls. So there is a 8/16 = 1/2 probability of the third student chosen in this situation being a girl.
Probability of teacher picking all 3 girls?
We multiply these probabilities:
There is a 14.71% probability of teacher picking all 3 girls.
X/2-15=-7
x-30=-14
x=-14+30
x=16
Answer:
5x + 2x + 7x
Step-by-step explanation: