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Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?
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If angle b measures 25Β°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units
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Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?
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