Answer:
Step-by-step explanation:
a) From the question, we have it that y joint varies as m an n then inversely with the square of d
Let us have k as the variation constant
We have this as:
b) We want to find the variation constant value
To get this, we use the values supplied in the question
c) We want to find the value of y given the second condition set
mathematically, we have that as: