Answer:
its c
Step-by-step explanation:
In classical mechanics, the three base dimensions are length which is already given in the question, mass and time. Mass refers to the amount of substance present and this is usually expressed in g, kg, lbs, and others. Time is the measured moments that have passed from different events and usually expressed in seconds.
18/4, 27/6, 36/8 are equivalent
Answer : A
The reciprocal of 5 would be 1/5 and 5/1 * 1/5 = 1
hope that helps!:)