A14 foot ladder is leaned up against a building. the ladder reaches a height of 2 squared 15 feet up the building. find the distance that the foot of the ladder is form the base of the building.

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

What is the sum of these mixed numbers 4 2/3+ 3 1/9