Answer:
Step-by-step explanation:
(pk) * r = p * (kr)
Answer:
a. 
b. 
c. 
d.
minutos
Step-by-step explanation:
a. Newton's law of cooling states that the speed with which a body is cooled is proportional to the difference between its temperature and that of the medium in which it is found. Then, the initial value problem is given by:


b. The differential equation obtained is a differential equation of separable variables:

c. After 33 minutes of serving the coffee has cooled to 180°:

d.

Answer:
502
Step-by-step explanation:
4 times 125.50 equals 502
Answer:
144
Step-by-step explanation:
54+90=144
144-90=54
90+54=144
144-54=90