A train that travels 30 miles in = hour at a that travels 20 miles in hour at a constant speed. explain or show why.

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

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?

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2