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Mathematics, 29.06.2019 15:30 lauren21bunch
Me ! given the system of equations presented here: 4x + y = 4 2x + 7y = 28 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? (5 points) select one: a. multiply the second equation by −1 to get −2x − 7y = −28 b. multiply the second equation by −4 to get −8x − 28y = −112 c. multiply the first equation by −7 to get −28x − 7y = −28 d. multiply the first equation by −2 to get −8x − 2y = −8
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Mathematics, 21.06.2019 23:00, tfyvcu5344
The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z
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Me ! given the system of equations presented here: 4x + y = 4 2x + 7y = 28 which of the following...
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