The diagram shows a parallelogram. The area of the parallelogram is greater than 10.5cm^2
a) show that 2x^2-25x+33<0
b)find the range of possible values of x

Alonso walked with his friend andy one day, and wanted to compare their speeds. alonso walked 3 miles in one hour, and andy walked 2 miles in 2 hours. complete the table to graph the relationship for each person.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

How to do this , and can some one explain