Answer:
6 mph
Step-by-step explanation:
Difference in distance
= 15 - 12
= 3 mi
time taken
= 30 mins
= 1/2 hour
Speed
= 3 ÷ 1/2
= 6 mph
Answer:
see below
Step-by-step explanation:
Closed under addition, subtraction and multiplication
Not closed under division :-
for example 3/4 = 0.75 which is not an integer
Answer:

Step-by-step explanation:
<u>Step 1: Find the volume of the cone</u>
<u />
<u>Plug in the values</u>
<u />
<u>Simplify and Solve</u>
<u />



Answer: 
In 10 days they will have the same amount of cards
100mph
Hope i could help and i hope i got it right....