for a), you want to square root 195, but you know 13^2(squared) is 169 and 14^2(squared) is 196, so 195 is between 169 and 196. therefore, find average between 13^2 and 14^2, which i guessed was 13.9^2, and that is 193.21. kind of close, and you just keep finding the average until u get something like 194.9999, which is 195
A) 13.964 = 13.96
B) -34.928 = -34.93
C) -17.492 = -17.49
D) 7.246=7.25
i) 12
j) -9
k) -square root of 0.75
l) square root of (4/9)
m) is geometry actually, check out the picture i tagged, good luck!