39 feet because if you multiply 13 and 3 its 39
Answer:
The commutative postulate for multiplication
Step-by-step explanation:
Given:
Consider the complete question is "A speed walker covered mi in hour. How far will he walk in 3/4 hours if he walks twice as fast?"
A speed walker covered mi in hour.
To find:
Distance covered by him if in 3/4 hour if he walks twice as fast.
Solution:
We have,
It means a speed walker covered mi in hour.
If the speed is twice then he can cover double distance is same time.
Distance covered by him if in 3/4 hour if he walks twice as fast is
Therefore, distance covered by him is 9 mi.
14+4^2\14-3*4 = 15 your answer is 15