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A certain spacecraft has 2 separate computer systems, X and Y, each of which functions independently of the other. The probabilities that systems X and Y will function correctly at liftoff are 0.90 and 0.99, respectively. What is the probability that at least one system will function correctly at liftoff?
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In the Old Southwest, only writers who showed exceptional __________ were likely to become widely known, because the region's weak infrastructure inhibited the development of publishing beyond local newspapers that served small towns.
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Advertising's role in popular music culture has been redefined: instead of a last resort for the creation and distribution of popular music, advertising now functions as a ___________ of music that might otherwise go unheard.
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(i) _____________ the cumbersome phraseology of contemporary critical theory, her treatise is, stylistically at least, in sharp contrast with the (ii) _____________ of the prose she is analyzing—prose reflective of a culture that values extreme linguistic compression.
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For many in the room, the idea of coming to the assistance of a rival was more than unpleasant: it was _____________.
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The overall message of this book on neuroscience is (i) _____________: the brain is quite (ii) _____________, and therefore damaged brains can be healed, aging brains can be rejuvenated, and even ordinarily healthy brains can be made faster and better.
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The concept of the Hellenistic period in ancient history has proved useful but also _____________, with scholars disagreeing on the dates when the period began and ended.
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Researchers concluded that although the success of pearl millet crops in the region varied with seasonal climatic conditions, cultivation remains ____________ because of pearl millet's predisposition to perform under stressful growing conditions, including drought.
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The vast majority of universities in the United States promote themselves as institutions of free speech and thought, construing censorship as _____________ their search for knowledge.
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According to the passage, reluctance to abandon the logarithmic-spiral model of shell formation arises from the fact that
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Which of the following statements about women and music in Europe from 1300 to 1566 is supported by the passage?
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Duprat would most likely agree that certain nineteenth-century French female societies
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The primary purpose of the passage is to
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Which of the following does the author suggest as an incentive to the development of more efficient irrigation?
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Marie responds to James by
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The units digit of $$7^{n}$$ is r, and the units digit of $$9^{n}$$ is t, where n, r, and t are positive integers. Which of the following could be the value of r+t?
Indicate all such values.
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Which of the following numbers satisfy their sum of reciprocals is either less than $$\frac{1}{3}$$ or greater than $$\frac{1}{2}$$ ?
Indicate all such numbers.
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n is a positive integer.
Quantity A$$\frac{1}{3^{n}}$$ Quantity B$$3(\frac{1}{4^{n}})$$
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If $$k$$ and $$n$$ are distinct digits and $$k \gt n$$, which of the following is the greatest?
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