The area of a rectangle is 45.15 square meters if the length is 21 meters what is the perimeter of the rectangle

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What is the shape of the height and weight distribution

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?