Which of the following improper fractions is less than 8?

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

Write the following as a base and exponent

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