 , 26.07.2019 13:00 JohnnyR7057

# Emma had just been given some coins by her parents. on the way to school she lost exactly half of them, and then by retracing her steps she found exactly four-fifths of the coins she had lost. what fraction of the coins that she received from her parents were still missing after emma retraced her steps? express your answer as a common fraction.   ### Another question on Mathematics Mathematics, 21.06.2019 16:30
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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
Emma had just been given some coins by her parents. on the way to school she lost exactly half of th...
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