Is there supposed to be a picture to this question
Answer: 4.75%.
Step-by-step explanation:
Given: The mean weight
of 500 college students is 70 kg and the standard deviation
is 3 kg.
Let X be the number of students weight over 75 kg.
If the weight is normally distributed, then the probability that students weigh over 75 kg:

Hence, the percentage of students weigh over 75 kg = 4.75%.
Answer:
a=-2î+j-5k
|a| = √(−2)² +1² + (−5)²
a = √√4+1+25
a = √30
Thus, direction cosines of a are
(- 2/(sqrt(30)), 1/(sqrt(30)), - 5/(sqrt(30)))
I don’t know I’m having the same problem
It would be 29 because of the c and the w y equal to z