Luz has attended classes everyday since she was in kindergarten. she said she has been in school for about 1000 days. what number could be actual number of school days if liz rounded to the nearest ten?

Ineed i do not understand i'm only 8

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?