Tuesday

September 30, 2014

September 30, 2014

Posted by **Lucy** on Thursday, May 24, 2012 at 4:53am.

- Math -
**MathMate**, Thursday, May 24, 2012 at 8:04amdT/dt=0.1(34-T)

dT/(34-T) = 0.1dt

Integrate both sides

-ln(34-T)=0.1t+c

34-T=Ce^(-0.1t)

T=34-Ce^(-0.1t)

Initial conditions:

t=0, T=4 => 4=34-C => C=30

so

T=34-30e^(0.1t)

A) Substitute t=15 to solve for T.

B) Substitute T=30 to solve for t.

- Math -
**Lucy**, Thursday, May 24, 2012 at 8:05amwow thank you so much

- Math :) -
**MathMate**, Thursday, May 24, 2012 at 8:49amYou're welcome!

**Answer this Question**

**Related Questions**

Math - Is this correct? The inside of your refrigerator might be set to a ...

Chemistry - Calculate the joules of energy involved when 11 grams of water at 10...

calculus - A cold metal bar at -30 degrees Celsius is submerged in a pool ...

College Algerbra - THE TEMPERATURE ON A SUMMER DAY IS // DEGREES FAHRENHEIT.the ...

Proportions - To convert a temperature in degrees Celsius to degrees Fahrenheit...

Physics - 1). A hot iron horseshoe (mass=.40kg), just forged, is dropped into 1....

algebra - The temperature on a summer day is 77 degrees Fahrenheit. The formula ...

Physics (Please help!!!) - 1) If a 10. m3 volume of air (acting as an ideal gas...

Math - To convert a temperature in degrees Celsius to degrees Fahrenheit ...

Math - To convert a temperature in degrees Celsius to degrees Fahrenheit ...