The bomb cyclone storm dumped 3 inches of snow per hour in Providence, Rhode Island. How many inches of snow fell during a 12-hour period?

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?

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25