Pls help
8th grade math

Which of the following is a justification used while proving the similarity of triangles lom and mon

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample