Answer:

Step-by-step explanation:
Hi!
Lets call:
T = temprature of the object
T₀ = temperature of surroundings
t = time
The rate of change of T is its derivative with respecto to time. If T > T₀, the object looses heat, so T decreases. Then, being k > 0:

In this case T₀ = 70ºF and k = 0.05/min. Then the differential equation is:

Answer:
14
Step-by-step explanation:
Replace with the values
15-1/2(2) = 15-1 = 14
Answer:
Tim has 64 dollars. I did the math and I know I'm right
Answer:
rational number
Step-by-step explanation:
A rational number can be expressed in the form
, where a and b are integers
- 8 =
← a rational number
b ≤ 9 (b is less than or equal to 9)
Hope this helps! ;)