What is the angle of x? Can someone please explain. I’ll give brainiest. 10 points

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

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