At the start of a scrabble game, your turn over the 100 letter tiles so you cannot see them. there are 4 s's and 2 blacks among the tiles. if you pick up one tile at the random, what is the probability you will not get an s nor a blank

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

What is the prime factorization of 230

Suppose your school costs for this term were $4900 and financial aid covered 3/4 of that amount. how much did financial aid cover? and how much do you still have to pay?