PLATO: Arrange the functions in decreasing order of their periods, y=-3cos(x+2pi) y=2/3cot(x/4) +6 y=-1/2tan(5x/6+pi y=5.hopefully someone answers this for future plato people

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k

Yahir designs bracelets. he uses between 9 and 15 red and yellow beads in the ratio of 2 red bead to 5 yellow beads. drag the beads into the container to meet these requirements

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25