Which of the following statements are true of solving equations? a. you are using inverse operations to isolate the variable.
b. the addition property is usually used first. c. you are making a good guess at the solution. d. order of operations is often done in reverse order. e. there are usually two solutions for a linear equation.

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?