each of five students used the same ruler to measure the length of the same pencil. these data resulted: 15.33 cm, 15.34 cm, 15.33 cm, 15.33 cm, and 15.34 cm. the actual length of the pencil was 15.85 cm. this data shows:

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.

What are the two main ideas of this passage? museum experts feel that museums must change to attract visitors. museum experts care more about the number of visitors than about history. museums that display artworks and exhibits do not make families welcome. museums like colonial williamsburg make learning about the past fun. museums in the united states are different than in other countries.