Answer:
value of a in terms of b and c is: 
Option D is correct.
Step-by-step explanation:
We are given:

We need to find a in terms of b and c
We have: 
Put value of d 

So, value of a in terms of b and c is: 
Option D is correct.
If the length of a side is x, then the surface area of a face of the cube is x squared. there are six sides in a cube so 6(x^2) would be the surface area.
6(x^2)=150
(x^2)=25
x=5
Answer:
I think it would be each girl scored 2 points, and each boy only scored one. :)
He will have to take out 20 hectograms in order to meet the weight limit.