Using the sum and difference formula to determine the exact value of cos165

Asystem of linear equations contains two equations with the same slope. select all of the correct statements. i a. the system may have two solutions. - b. the system may have infinitely many solutions. c. the system may have one solution. o d. the system may have no solution. submit

Which expression gives the exact value of x?

2,10,-50 next two numbers geometric sequence