Jacks age is three years more than twice the age of his younger brother jimmy if the sum of their ages is at most 18 find the greatest age that jimmy could be

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?

Sum of the interior angles of a pentagon

In the diagram below,abc is congruent to dec what is the value of x