Martin has 10 loose identical red socks and 10 loose identical blue socks. what is the least number of socks he would have to choose to be sure he finds a matching pair? answer only if you know the answer. lame answers will be reported.

  21.3

step-by-step explanation:

multiplying the given equation by c/sin(25°), we get

  c = 9/sin(25°) ≈ 21.2958 ≈ 21.3

we assume "c" is the length of ab, the side opposite angle c in triangle abc.

19.

step-by-step explanation:

you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19