Tìm x để mệnh đề sau đây đúng x 2 = 4 
x = 2

Jack is considering a list of features and fees for denver bank. jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements?

Solve the triangle. a = 21°, c = 105°, c = 5

Select all of the following expressions that are equal to 2.5.