Solve the problem.A cup of coffee is heated to 194°and is then allowed to cool in a room whose air temperature is 
After 11 minutes, the temperature of the cup of coffee is 
Find the time needed for the coffee to cool to a temperature of 102°. Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.(Round your answer to one decimal place.)
A. 15.1 minutes
B. 41.1 minutes
C. 29.7 minutes
D. 26.4 minutes
Answer: D
Mathematics
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Apply Green's Theorem to evaluate the integral.
-5 dx + 7x dy; C the circle with center (0, 0) and radius 4.
A. 112? B. 28 C. 16? D. 28?
Mathematics
Find an equation in slope-intercept form (where possible) for the line.Through (-6, -5) and (9, -5)
A. x = -6
B. 
x + 9y = 0
C. 
x - 6y = 0
D. y = -5
Mathematics
Solve the problem.The amplitude of an alternating voltage V = V(t) is sometimes indicated by giving the rms (root mean square) voltage, which is the square root of the average value of V2. Find the rms voltage if 
over the period 
to t = 1/60 s.
A. 153.3 V B. 265.6 V C. 23,500.9 V D. 0.1 V
Mathematics
Simplify.
A. 
B. 
C. 0
D. 
Mathematics