Darius reads 2/10 of his book in 3 days. He says that if he reads the rest of the book at the same speed, it should take him 15 more days to finish the book. Is Darius correct?

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.

Divide. write in the simplest form. 4 1/6 divided by 10

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)