Amechanic repaired 28 cars and 46 trucks last month. he spent 2.5 hours repairing each of these vehicles. which equation can be used to find h, the total number of hours the mechanic spent repairing these vehicles?

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The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Acontrol during an experiment. might change remains constant does not exist does change