Solve the problem.Experience shows that a ski lodge will be full (169 guests) if there is a heavy snow fall in December, while only partially full (81 guests) with a light snow fall. What is the expected number of guests if the probability for a heavy snow fall is .40? Assume that heavy snowfall and light snowfall are the only two possibilities.
A. 67.6
B. 101.4
C. 133.8
D. 116.2
Answer: D
Mathematics
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Solve the system by substitution.
A. (-7, 5) B. (6, 5) C. (5, 6) D. (-6, 4)
Mathematics
Write out the sum.
A. n + 6 B. 1 + 2 + 3 + ... + n C. 6 + 7 + 8 + ... + (n + 6) D. 7 + 8 + 9 + ... + (n + 6)
Mathematics
Convert the exponential function to the form indicated. Round all coefficients to four significant digits.
?
?
; 
?
A. 
,
B. ?
, 
C. 
,
D. 
,
E. 
,
Mathematics
Calculate dy/dt using the given information.
= x2 + y2; dx/dt = 12, x = 1, y = 0
A. 
B. -12
C. - 
D. 12
Mathematics