Answer:
t = 21
Step-by-step explanation:
The ball strikes the groujd when h = 0.

Since time must be positive, t = 21.
Answer:
Step-by-step explanation:
hey hellojuhb ndjuy7GB
80-64/80 x 100 = 20%
The answer would be 20%.
Answer:
Q.8 is 25percent
Step-by-step explanation:
the total of all brown hair and brown eyes is 30 and 30 0f 120 is 25
Answer:
E(X) = 1.28
Var(X) = 0.6016
E(X | Y=2) = 1.6667
Var(X | Y=2) = 0.4272
Step-by-step explanation: