SOLUTION: how do you solve the problem: a varies jointly with b and c. if a=120 b=8 and c=5 write an equation relating the variables then solve for a when b=-4 and c=9
Algebra ->
Polynomials-and-rational-expressions
-> SOLUTION: how do you solve the problem: a varies jointly with b and c. if a=120 b=8 and c=5 write an equation relating the variables then solve for a when b=-4 and c=9
Log On
Question 526017: how do you solve the problem: a varies jointly with b and c. if a=120 b=8 and c=5 write an equation relating the variables then solve for a when b=-4 and c=9 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! a varies jointly with b and c. if a=120 b=8 and c=5 write an equation relating the variables then solve for a when b=-4 and c=9
-------
a = kb*c
----
solve for "k" using a = 120 when b = 8 and c = 5
120 = k*8*5
k = 3
----
Equation:
a = 3*b*c
-----
Solve for "a" when b = -4 and c = 9
a = 3*-4*9
a = -108
=============
Cheers,
Stan H.
=============
(