The length of side ST in Polygon STUV is 18 feet. What is the length of side S ′ T ′ in a dilated figure S ′ T ′ U ′ V ′ , if the scale factor is 3?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

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