Homework Help: College Algebra 2

Posted by Francine on Sunday, September 25, 2011 at 9:51pm.

The number of kilograms of water in the human body varies dirctly as the mass of the body. An 84-kg person contains 64-kg of water. How many kg of water is in a 63-kg person?

College Algebra 2 - Reiny, Sunday, September 25, 2011 at 10:28pm
water = k(mass) , where k is a constant
given water = 64 kg when mass = 84 kg
64 = k(84)
k = 64/84 = 16/21

water = (16/21)(mass)
when mass = 63
water = (16/21)(63) = 48 kg
College Algebra 2 - Stop, Thursday, September 6, 2012 at 6:00pm
80.try doing it. It easy

Answer this Question

Related Questions

algebra - the number of kilograms of water in a human body varies directly as ...
Physics - Estimate the number of h20 molecules in a human body of mass 80.2 kg. ...
chem/phys - Calculate the number of H2O molecules in a human body of mass 66.5 ...
College Physics - 2 questions: a)Assuming that water has a density of exactly 1 ...
MATH - I don't understand this question The formula B=0.01m0.6 relates the ...
Algebra 2 - Evaluate with nth Roots. For mammals, the lung volume V ( in ...
physics - I have 2 questions: Assuming that water has a density of exactly 1 g/...
gr9math - about 99% of the mass of the human body is made up of just six ...
mass and human body - By mass, most of human body is composed of what? nitrogen ...
math - How do you calculate the total number cells in a human body given that a ...

For Further Reading

First Name:
School Subject:
Answer: