Answer:
a. 720
b. 0.3
Step-by-step explanation:
a.
Three balls are selected at random without replacement.
First ball can be selected in 10 ways
Second ball can be selected in 9 ways
Third ball can be selected in 8 ways
Thus, there are 10×9×8 =720 different ways of selecting three balls.
b.
There are three cases that satisfy this condition
- first ball picked is 5, the others are not
- first ball is not 5, second is 5, third is not
- first and second ball is not five, third ball is 5
Each probabilities are:



Thus, one of the balls selected is the number 5 is then 
9514 1404 393
Answer:
n = 6
Step-by-step explanation:
Add 2 and collect terms
3n = 18
Divide by 3
n = 6
Answer:
60
Step-by-step explanation:
5x12=60
Answer:
What is the average rate of change for this exponential function for the interval from x=0 to x=2
m = (f(2) - f(0)) / (2 - 0)
m = (4 - 1) / (2 - 0)
m = 3 / 2
m = 1.5
Answer:
its called impossible
Step-by-step explanation:
impossible