Una cadena de oro es de ley 0,850 y contiene 12 gramos de oro puro. ¿cuánto pesa la cadena de oro?

S-7< 3 i need answering this problem someone asap answer

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Find the distance between (0,5) & (-4,2)