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The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?
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At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?
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You estimate that a baby bird weighs 2 pounds. the actual weight of the baby bird is 1.5 pounds. find the percent error. round your answer to the nearest hundredth of a percent.
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0.4 times by 3.7multiplying by decimals...
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