Arianna has a coin collection. She keeps 4 of the coins in her box, which is 10% of the collection. How many total coins are in her collection?

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute