Solve this exercice:
1+2+2²+2³+2⁴++ 2²⁰¹¹
it can be solved by using geometric progression?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Which expression converts 45 degree to radians

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%