Answer:
120√2 m is the diameter of the path.
Step-by-step explanation:
We are given the following in the question:
When Luis has walked one-quarter of the distance around the circular path, the magnitude of his displacement is 120 m.
Displacement = 120 m
The two radius and the displacement forms a right angles triangle.
By Pythagoras theorem:

where r is the radius of the circular path.

Thus, diameter of circular path is

Thus, 120√2 m is the diameter of the path.
The attached image shows the circular path.
You have to use a system. the first would be x + y = 12 since she has 12 coins. the other equation would be 0.05x + 0.1y = 0.95 (an easier way is 5x + 10y = 95 if you clear it). now you just solve using substitution or elimination.
Answer:
they are not equal
Step-by-step explanation:
5x is 5 times x but 5+x is 5 plus x
The answer is B. because 0.09 would the youngest, 30% transfers to 0.3 which would be the second youngest, 1.98 would be the third youngest, and the square root of 9 is 3, which would be the oldest.