2x10^2+4 x 10^1+6 x 10^0+1x1/10^1+9x1/10^2 decimal notacion

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart