Answer:
53.3324
Step-by-step explanation:
given that a thermometer is removed from a room where the temperature is 70° F and is taken outside, where the air temperature is 40° F.
By Newton law of cooling we have
T(t) =
where T (t) is temperature at time t,T =surrounding temperature = 40, T0 =70 = initial temperature
After half minute thermometer reads 60° F. Using this we can find k
So equation is
When t=1,
we get
The answer is D
Hope this helps :)
I am pretty sure it would equal 3/4 since 1 - 1/4 = 3/4 3/4 = 75%<span />
Since the central angle is a right angle, the labeled arc is 1/4 of the total circumference of the circle. The circumference of a circle with radius is , so we have
2^2+5^2=c^2
4+25=c^2
29=c^2
so the answer would be B.