Mrs. Thomas called an electrician to come to her home to fix some wires. The electrician charged $40 to go to Mrs. Thomas' house and $55 for each hour that he worked. The electrician charged Mrs. Thomas a total of $190. Write an equation to represent the number of hours, h, that the electrician worked at Mrs. Thomas' house. please answers 35 POINTS FAST!!!

40+55=$190
190/ by either 40 or 50 and then u get ur answer by doing that

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.