What is the circle of fifths in piano? I don't understand .

In a sports club of 60 members , 30 play cricket , 25 play elle and 15 play botn include this in a venn diagram

The opening section sounds marchlike, with accented beats and alternations between instrumental groups. eventually, a total change of character marks a short, new section. at approximately which time interval from the beginning does this appear?

Find all the zeros of a quadratic polynomial if 2x quad - 9x cube + 5x square + 3x - 1 if two of its zeroes are 2 + root 3 and 2 - root 3