Evaluate the expression given the variable replacements. 20ab (a - b) (if a = 4 and b = -2)

Apair of ordinary dice is rolled. what is the probability that each die will show a number higher than 4. 1. (1/36) 2. (1/12) 3. (1/6) 4. (1/4) 5. (1/3)

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33

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