Explain how you can break apart one of the addends to make a ten to find the number of points jeannie and kevin scored

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

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

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?