Lawrence bought 2/3 pound of roast beef. he used 3/4 of it to make a sandwich. how much roast beef did lawrence use for his sandwich?

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.

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?