train a high speed 15 km per hour later than train B if train a Travels 150 km in the same time train B Travels 120 km what are the speed of the two trains​

Which statement best completes the diagram of the ways the different branches of government can limit each other's powers?

What was the main purpose of one of the first world organizations

Aresearcher conducts a focus group to learn about attitudes towards hygiene and disease prevention. two weeks after the focus group, the researcher learns one of the subjects had a heart attack at home and was hospitalized, but made a full recovery. based on dhs regulations, the researcher report this event to the irb? no, this does not need to be reported since the subject had the heart attack when they were home, not at the focus group. no, this does not need to be reported since it is unrelated to participation in the study. no, this does not need to be reported because two weeks have passed. no, this does not need to be reported since the subject recovered.