Daniela measures her math book and records its width as 21.9 cm to the nearest tenth of a centimeter. the actual measurement of the book’s width is 22.0 cm. what is the percent error of her measurement? round your answer to the nearest tenth of a percent.

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?