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Mathematics, 22.07.2019 17:30 emmamerida

Which of the following proportions is true? a. 1: 4 = 2: 5 b. 6: 9 = 10: 12 c. 5: 11 = 15: 30 d. 2: 7 = 4: 14

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Which of the following proportions is true? a. 1: 4 = 2: 5 b. 6: 9 = 10: 12 c. 5: 11 = 15: 30 d. 2:...
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