Answer:
V≈523.6
Step-by-step explanation:
Volume is V=4/3*pi*r^3 and radius is half of diameter
Answer:
c
Step-by-step explanation:
my dads friend died ;-;
-31/15 is the correct answer
Answer: A. 
Step-by-step explanation:
Total digits on keypad = 5
According to permutation,
If repetition of digits is not allowed then the number of 5-digits passwords can be formed = 5!
= 5 x 4 x 3 x 2 x 1 [n!=n x (n-1) x (n-2)x ... x 1]
=120
The probability that someone guesses the correct code = 

Hence, the correct option is A.
The rock hits the gorund at 45s. is the answer