From a point on the edge of the sea, one ship is 5km away on a bearing of S50°E and another is 2km away on a bearing of S60°W. How far apart are the ships?

Math each whole number with a rational,exponential expression

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

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