SOLUTION: the heat loss of a glass window varies jointly as the window's area and the difference between the outside and the inside temperatures. a window 6 feet wide by 3 feet long loses 90

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: the heat loss of a glass window varies jointly as the window's area and the difference between the outside and the inside temperatures. a window 6 feet wide by 3 feet long loses 90      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 850655: the heat loss of a glass window varies jointly as the window's area and the difference between the outside and the inside temperatures. a window 6 feet wide by 3 feet long loses 900 Btu per hour when the temperature outside is 15 degrees colder than the temperature inside. find the heat loss through a glass window that is 3 feet wide by 9 feet long when the temperature outside is 19 degrees colder than the temperature inside.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
the heat loss of a glass window varies jointly as the window's area and the difference between the outside and the inside temperatures.
a window 6 feet wide by 3 feet long loses 900 Btu per hour when the temperature outside is 15 degrees colder than the temperature inside.
:
Find k of the equation
6*3*15*k = 900
270k = 900
k = 900/270
k = 3.33
:
"find the heat loss through a glass window that is 3 feet wide by 9 feet long when the temperature outside is 19 degrees colder than the temperature"
HL = 3*9*19*3.33
HL = 1710 btu heat loss
: