Help mee on this part I’m stuck on this problem and I’m confused

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

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?