Answer:
The mode is 75
Step-by-step explanation: It is the one that appears most often
Answer:

Step-by-step explanation:
well, by using definition of tan of an angle
let the distance between Earth and shooting star is
.
since
,
then 
X^-n duals: 1/x^n. You cannot have negative exponents so do its inverse to get rid of the negative exponent
Answer:
1/3
Explanation:
P(Freshman | Boy)
⇒ Probability = Number of favorable outcomes ÷ Total number of possible outcomes
- P(Freshman | Boy) = freshman/total boys