Any number which is divisible by both 3 and 5 must….. A. be a factor of 15

B. be an odd number

C. end with a five

D. be a multiple of 15

D

Step-by-step explanation:

A is wrong because a factor of 15 is not divisible by both

B is wrong because 30 is even and divisible by both

C is wrong because 30 does not end with a 5

D is correct because there are no numbers other than multiples of 15 that doesn't lead to a decimal when you divide by those numbers

step-by-step explanation: yes

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s