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Mathematics, 30.06.2019 00:00, ZoomZoom44
1. a student took 60 minutes to answer a combination of 20 multiple-choice and extended-response questions. she took 2 minutes to answer each multiple-choice question and 6 minutes to answer each extended-response question. a. write a system of equations to model the relationship between the number of multiple-choice questions (m) and the number of extended-response questions (r).b. how many of each type of question was on the test? show your work.2. a scientist wants to make 6 milliliters of a 30% sulfuric acid solution. the solution is to be made from a combination of 20% sulfuric acid solution and a 50% sulfuric acid solution. (review "mixture problems resources" for .) a. write a system of equations to model the relationship. b. how many milliliters of each solution must be combined to make the 30% solution? show your work.3. choose the method of solving (graphing, substitution, elimination) that seems easier to use for the system below. explain why you made your choice. you do not need to solve the system. 2x-3y=4 2x-5y=-6
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