April is training for a marathon by running no less than 55 km per week. she runs at an average rate of 10 km per hour. what is the minimum number of hours, h, she should run.
if you guys would like i could also post the answer choices, just comment.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.