Solve the problem.How many seconds after the switch in an RL circuit is closed will it take the current i to reach  of its steady state value? Express answer in terms of R and L and round coefficient to the nearest hundredth.

A. 1.05 L/R seconds
B. 1.25 L/R seconds
C. 0.43 L/R seconds
D. 0.63 L/R seconds


Answer: C

Mathematics

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Use the table of values of f to estimate the limit.Let f(x) = , find f(x).

A.
 ; limit = 0.4
B.
 ; limit = -0.5
C.
 ; limit = 0.5
D.
 ; limit = 0.6

Mathematics

Use the multiplication principle to solve the problem.A restaurant offers 7 possible appetizers, 11 possible main courses, and 9 possible desserts. How many different meals are possible at this restaurant?  (Two meals are considered different unless all three courses are the same).

A. 693 B. 27 C. 683 D. 343

Mathematics

Solve the problem.The distance d, in feet, a bomb falls in t seconds is given by  How many seconds are required for a bomb released at 7000 feet to reach its target? (If necessary, round your answer to two decimal places.)

A. 1210.19 seconds B. 382.18 seconds C. 37.82 seconds D. 75.64 seconds

Mathematics

A small country exports soybeans and flowers. Soybeans require 8 workers per acre, flowers require 12 workers per acre, and 100,000 workers are available. Government contracts require that there be at least 3 times as many acres of soybeans as flowers planted. It costs $250 per acre to plant soybeans and $300 per acre to plant flowers, and there is a budget of $3 million. If the profit from soybeans is $1,400 per acre and the profit from flowers is $2,000 per acre, find the maximum profit. Round the answer to the nearest tenth of million. 

A. $17.3 million B. $21.7 million C. $14.3 million D. $15.2 million E. $16.2 million

Mathematics