Describe the types of solutions of systems of
equations. Give an example and illustration.

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

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?