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Magoosh
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According to the passage, which of the following best accounts for the fact that the rubble pile hypothesis is, at least initially, “conceptually troublesome”?
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Magoosh
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According to the rubble-pile hypothesis, an advantage conferred on an asteroid held together by weak forces is that it is
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Magoosh
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$${1}\over{1+{{1}\over1-\frac{1}{3}}}$$
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The arctic curlew, a once common wading species in the tundra, has reached endangered status in a mere few decades. Those who account for the sudden loss of the bird do so in terms of either pollution or climate change. Fagen notes how hydrocarbons from oil tankers have increased in a proportion commensurate with the decline in the number of arctic curlew. He believes that the birds not only ingest hydrocarbons while wading in polluted water but that they also feed on worms and small fish that themselves have accrued modest amounts of hydrocarbons. Miller, on the other hand, believes that climate change alone can account for the depletion of the arctic curlew. She argues that since many of the areas in which it once fed no longer provide adequate sustenance, the bird has been forced to change migratory paths and must land in a foreign ecosystem where it is unable find adequate nutrition.
Both theories, however, are somewhat correct but not in a way that either Fagen or Miller would have likely anticipated. The theory positing that the hydrocarbons birds ingest affect their ability to navigate contains elements relating to both climate change and pollution. For example, when a curlew ingests tainted fish, its ability to navigate for several hours afterwards is diminished and it will often veer from its traditional path. Where at one point such deviations would not have affected the bird's ability to forage, climate change has resulted in a significant diminishment of areas capable of providing sufficient sustenance for the arctic curlew. As a result, it often succumbs to starvation.
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Magoosh
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Which of the following is the primary purpose of the passage?
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Magoosh
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Which of the following is the correct ordering of $$2\sqrt{13},4\sqrt{3},5\sqrt{2}$$ and$$3\sqrt{6}$$ ?
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Magoosh
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W, X, Y and Z each represent a different number. If the sum of each column is shown beneath that column, and the sum of each row is shown beside that row, then n =
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Language acquisition has long been thought of as a process of imitation and reinforcement. Children learn to speak, in the popular view, by copying the utterances heard around them, and by having their response strengthened by the repetitions, corrections, and other reactions that adults provide. In recent years, it has become clear that this principle will not explain all the facts of language development. Children do imitate a great deal, especially in learning sounds and vocabulary; but little of their grammatical ability can be explained in this way. Two kinds of evidence are commonly used in support of this criticism–one based on the kind of language children produce, the other on what they do not produce. The first piece of evidence derives from the way children handle irregular grammatical patterns. When they encounter such irregular past-tense forms as went and took or such plural forms as mice and sheep, there is a stage when they replace these by forms based on the regular patterns of the language. They say such things as wented, taked, mices, mouses, and sheeps. Evidently, children assume that grammatical usage is regular, and try to work out for themselves what the forms 'ought' to be–a reasoning process known as analogy. They could not have learned these forms by a process of imitation. The other kind of evidence is based on the way children seem unable to imitate adult grammatical constructions exactly, even when invited to do so.
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Magoosh
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Diana invested $61,293 in an account with a fixed annual percent of interest, compounding quarterly. At the end of five full years, she had $76,662.25 in principal plus interest. Approximately what was the annual percent rate of interest for this account?
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Magoosh
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The primary purpose of the passage is to
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Magoosh
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By saying, “they could not have learned these forms by a process of imitation” the author is implying that
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Magoosh
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Set K consists of all fractions of the form$${ x}\over({x+2}) $$where x is a positive even integer less than 20. What is the product of all the fractions in Set K ?
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Magoosh
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$$\frac{228}{494}$$=
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Magoosh
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$$(x)(5+\sqrt{7})=90$$In the equation above, x =
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Magoosh
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A company has 3 vice presidents, 15 executives, 82 data entry employees, and no other employees. The average salary for the fifteen executives is $80,000 and the average salary for the 82 data entry employees is $25,000. If the average salary across all three types of employees is $44,500, then what is the average salary of the three vice presidents?
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Magoosh
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Egidio's Gym has been in operation for seven years, and offers regular weekly weight training and aerobic classes, as well as occasional programs in dance and martial arts. The gym has seen a surge of new members in the past twelve months, despite keeping the same membership fee over the past three years. Of the 450 current members, more than 250 have joined in the past year. Clearly, the membership of Egidio's Gym has risen a significant amount because of its superior facilities. Which of the following is an assumption on which the argument depends?
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Magoosh
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If A is the initial amount put into an account, P is the annual percentage rate of interest, which remains fixed, and the account compounds quarterly, which of the following is an expression, in terms of A and P, for the amount in the account after 5 years?
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Magoosh
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While antibiotics have done inestimable good to humankind over the last seventy years, there are several drawbacks to using antibiotics that, until recently, have been overlooked. The human microbiome, which consists of the trillions of bacteria that reside in each person's body, is essential to good health. Specifically, the body contains and requires both “good” and “bad” bacteria. It is when the proper equilibrium between the “good” bacteria and the “bad” bacteria is disrupted that a number of health issues can emerge. Nonetheless, antibiotics indiscriminately kill both the “good” and the “bad” bacteria, so each course of antibiotics should be followed by a treatment that ___________________________________. Which of the following most logically completes the argument above?
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Magoosh
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If x and y are both positive then $$\sqrt{72x^{3}y^{16}}$$ =
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Magoosh
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If xy = 5 and $$x^{2} + y^{2} = 12$$, then$$ \frac{x}{y} + \frac{y}{x} $$=
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