Problema Solution
y varies jhointly as a and b, and inversely as the square root of c. y=20 when a=5, b=2, and c=9. Find y when a=7, b=5, and c=25.
y=
Answer provided by our tutors
y varies jhointly as a and b, and inversely as the square root of c. y=20 when a=5, b=2, and c=9. Find y when a=7, b=5, and c=25.
y=k(ab)/sqrt(c).
20=k*10/sqrt(9).
20=10k/3.
10k=60.
k=6.
When a=7, b=5, and c=25.
y=6*35/sqrt(25).
6*35/5.
y=42.