Answer:
Step-by-step explanation
2. you gave that there is a 40% chance that her instructor will be watching, which means that there is a 60% chance he will not be watching (100% - 40%).
3. you gave that there is a 90% chance of making a bull's eye, and 40% chance the instructor will be watching
since those two events are independent of each other, the chance of both of them happening is the product of the two chances, namely 0.9 x 0.4 = 0.36, or 36%
Answer:
AB ≈ 4.41
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos25° = 
= 
= 
( multiply both sides by AB )
AB × cos25° = 4 ( divide both sides by cos25° )
AB = 
≈ 4.41 ( to the nearest hundredth )
Answer:
Step-by-step explanation:
cross multiply, 
The mean is the average of a set of numbers. You add all of your numbers together (example = 1+5+3= 9), then you divide the answer by the number of numbers you have used ( 9 divided by 3 = 3) so the mean is 3
