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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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Hurry can a triangle can be constructed with angles measuring 115°,55°, and 20°? yes or no
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-5j + 3 = -4j - 2 please someone help me solve for j...
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