Resolva as multiplicações e encontre o valor correto para o espaço vazio? A) (-6).=+6. B) (-2.= -4. C) 6. = 0. D) 9. = 27.

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

For the first question the answer is a, for the second c, for the third d, for the 4th b, for the 5th a