01/22/25

Trigonometric Identities|Please help!
Please help me understand how to verify the trigonometric identity:cot2θ⎯⎯ * sec2θ = 7tanθ cosθ csc2θcsc θ
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01/12/25

When a number is decreased by 30 % of​ itself, the result is 14. What is the​ number?
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01/08/25

To get the 10% discount, a shopper must spend no less than $200. Use d to represent the spending (in dollars) of a shopper who gets the discount.
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12/07/14

there are 10 students
there are 10 students : 6 females and 4 males , in professor lee's statistic class. if he chooses 4 students whast the probability that (a) choosing 3 makes (b) at last three males, and (c) less... more
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12/07/14

What is the probability that in a sample of the 6 most recent recommendations, that at least 5 of them made money?
An analyst claims that there is a 70% chance of making money on the investments he recommends. If this is true, what is the probability that in a sample of the 6 most recent recommendations, that... more
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12/06/14

Thirty-one biased coins are flipped once. The coins are weighted so that the probability..
Thirty-one biased coins are flipped once. The coins are weighted so that the probability of a head with any coin is 0.4. What is the probability of getting at least 16 heads?
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