My number has 8 tens .the digit in the ones place is greater than the digit in the teens place

The letter tiles shown below are in a bag. whiteout looking i am going to draw one tile. what are my chances of drawing g?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?