(1 + sin 20 + cos 20)2 = 4 cos 0 (1 + sin 20)​

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

Bill works as a waiter and is keeping track of the tips he ears daily. about how much does bill have to earn in tips on sunday if he wants to average $22 a day? tips by day tips (dollars) monday tuesday wednesday thursday friday saturday $14 $22 $28 $36

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'