Carlos has 90 songs on his mp3 player. he has 35 rock songs and 22 pop songs. the rest are jazz. write a eqaution that carlos could use. explain

Which value would be a solution for x in the inequality 47-4x< 7

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

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