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65. Perform each calculation to the correct number of sig- nificant figures. (a) (78.4 44.889) 0.0087 (b) (34.6784 x 5.38) + 445.56 (c) (78.7

65. Perform each calculation to the correct number of sig- nificant figures. (a) (78.4 44.889) 0.0087 (b) (34.6784 x 5.38) + 445.56 (c) (78.7 x 10 88.529) + 356.99 (d) (892 986.7) + 5.44

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