A 15-foot flagpole casts a 13 foot-shadow. At the same time, a nearby building casts a 55-foot shadow. How tall is the building?

Given the points a(-2, 1) and b(8, 6), find the coordinates of the point c on directed line segment ab, that partitions ab in the ration 2: 3.

Which of these triangle pairs can be mapped to each other using two reflections?

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years