?Buses arrive and depart from a college every 20 minutes. The probability density function for the waiting time t (in minutes) for a person arriving at the bus stop is
on the interval
. Find the probability that the person will wait no longer than 5 minutes.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: C
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Perform the indicated operation. Simplify the result, if possible. ÷
A.
B. 4x + 4y
C.
D.
Add and write the resulting polynomial in descending order.(2n5 + 8n - 6n4) + (8n4 + 4n5 - 5n)
A. 12n5 + 10n4 - 11n B. 6n5 + 2n4 + 3n C. 11n10 D. 6n + 2n5 + 3n4
Solve by graphing. Label the axes and show where the solution is located on the graph.In one U.S. town the annual consumption, b, of beef (in kg per person) can be estimated by where t is the number of years since 1975. Graph the equation and use the graph to estimate the beef consumption in the year 1995.
A. About 15 kg per person B. About 32 kg per person C. About 18 kg per person D. About 12 kg per person
Express the sum or difference as a product of sines and/or cosines.cos(4?) - cos(6?)
A. -2 cos(5?) sin ? B. -2 sin(5?) sin ? C. 2 sin(5?) sin ? D. cos(-2?)