When government agents are sent as actors into a bank to test whether loans are more likely to be granted to whites than blacks they are using a statistical technique called

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

Negative 5 1/12 + negative 4 1/4 + 6 3/4

Which one is true about the hexagons ?