Which statement best explains the relationship between lines FG and HJ?
They are perpendicular because their slopes are
equal.
They are perpendicular because their slopes are
negative reciprocals.
They are not perpendicular because their slopes are
equal.
They are not perpendicular because their slopes are
not negative reciprocals.

Acity plans to build a new rectangular-shaped park. the perimeter of the park will be 940 meters. the width of the park will be 300 meters. what will be the length, in meters, of the new park?

Which system of linear inequalities is represented by the graph?

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?