Connecting a tangent and a radius to form a closed polygon will form a?

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

What is the value of r of the geometric series?

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?