90 degrees
Hope this helps
Answer:
4
Step-by-step explanation:
It's AoPS question
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

Simplify the expression 5(x-3)(x^2+4x+1)
it would be I think answer number 3
Answer:
D 18%
Step-by-step explanation:
18/100 = 18%so D is the answer