Mathematics, 02.12.2021 03:00 ianbrown00121
Problem 3: Assume that you are aboard a research submarine doing submerged training exercises in the Atlantic
Ocean. At time t = 0, you start porpoising (going alternately deeper and shallower). At time t = 4 min you
are at your deepest, y =- 1000 m. At time t = 4 min you next reach your shallowest. y =- 2000 m. Assume
that y varies sinusoidally with time.
A. Sketch the graph of y versus t
B. Write an equation expressing y as a function of t
C. Your submarine can’t communicate with ships on the surface when it’s deeper than -300m. At time t=0, could your submarine communicate with a ship? How did you arrive at your answer?
D. Between what two nonnegative times is your submarine first unable to communicate with a ship?
Answers: 1
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The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest
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Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?
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