13 1/2 - 7 3/8

what is the answer?

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

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.