Verify the identity. sin (x + y) - sin (x - y) = 2 cos x sin y

i need so much help with this please answer quick!!

41/17 as a decimal rounded to the nearest hundredth

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point

The median for the given set of six ordered data values is 29.5 9 12 25 __ 41 48 what is the missing value?