The Garzas have a kiddie pool and an adult swimming pool in their backyard. The kiddie pool is 7 feet long. The adult swimming p
1 answer:
Given:
The kiddie pool is 7 feet long. The adult swimming pool is 42 feet long.
To find:
How many times as long as the kiddie pool is the adult swimming pool?
Solution:
Let adult swimming pool is x times the kiddie swimming pool.
Divide both sides by 7.
Therefore, adult swimming pool is 6 times the kiddie swimming pool.
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Answer:
The refrigerator was at around 13 ∘C
Step-by-step explanation:
Newton's Law of Cooling:
The rate of change of a body temperature (amount of heat loss/time of loss) is directly proportional to the difference between its own temperature and the surroundings.
T ⇒ temperature
t ⇒ time
Tenv ⇒refrigerator temperature
⇒ rate of change of he temperature
-h ⇒ constant of proportionality (negative because the temperature is decreasing inside the refrigerator)
We have 3 points:
time (minutes) - Temperature (∘ C)
0 (when the pan was put in the refrigerator) - 46
15 (after 15 minutes) - 27
30 (15 minutes after the first 15 minutes) - 19
= -h (27 - Tenv)
= -h (19 - Tenv)
Now we have a system of two equations and two variables
The refrigerator was at around 13 ∘C