SOLUTION: x varies directly as the square of s and inversely as t. How does x change when s is doubled? When both s and t are doubled?

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: x varies directly as the square of s and inversely as t. How does x change when s is doubled? When both s and t are doubled?      Log On


   

Question 167122: x varies directly as the square of s and inversely as t. How does x change when s is doubled? When both s and t are doubled?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
x varies directly as the square of s and inversely as t. H
x = s%5E2%2Ft
:
How does x change when s is doubled?
x = %282s%29%5E2%2F%28t%29 = %284s%5E2%29%2F%28t%29; x increase 4 times
:
:
When both s and t are doubled?
x = %282s%29%5E2%2F%282t%29 = %284s%5E2%29%2F%282t%29 = %282s%5E2%29%2F%28t%29: We can say that x is doubled