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OG12 OG15 OG16 OG17
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If a=-0.3 which of the following is true?
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The operation $$\Delta$$ is defined for all nonzero x and y by $${x}\Delta{y}={x}+\frac x y$$. If $$a > 0$$, then $$1\Delta (1\Delta a) =$$
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190302
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$$\frac{b}{a}$$ - $$\frac{a}{b}$$=0.Which of the following option must be true?
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190302
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$$\frac{a}{b}$$+$$\frac{b}{a}$$=2. Which of the following option must be true？
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OG18-语文分册 OG19-语文分册 OG20-语文分册
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In early Mesopotamian civilization, castor oil served not only as a laxative, but also a skin-softening lotion and it was a construction lubricant for sliding giant stone blocks over wooden rollers.
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PREP07 Test 2
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Bobby bought two shares of stock, which he sold for $96 each. If he had a profit of 20 percent on the sale of one of the shares but a loss of 20 percent on the sale of the other share, then on the sale of both shares combined Bobby had
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Magoosh
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Pump A can empty a pool in A minutes, and pump B can empty the same pool in B minutes. Pump A begins emptying the pool for 1 minute before pump B joins. Beginning from the time pump A starts, how many minutes will it take to empty the pool?
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190113 还原机经选题: 文字题&几何
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There are 23 people in the Planning Department, and A people in the Finance Department of a company. The total number of people of these two departments is B. How many people belong to both departments at the same time?
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Manhattan
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Which of the following points could lie in the same quadrant of the xy-coordinate plane as the point (a, b), where $$ab \neq 0$$ ?
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OG12 OG15 OG16 OG17
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The automotive conveyor-belt system, which Henry Ford modeled after an assembly-line technique introduced by Ransom Olds, reduced from a day and a half to 93 minutes the required time of assembling a Model T.
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PREP07 Test 1
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if $$a>{b}>0$$, then $${\sqrt{{a}^{2}-{b}^{2}}}=$$?
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OG12 OG15 OG16 OG17
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An operation ◎ is defined by the equation a◎b=(a-b)/(a+b), for all numbers a and b such that a ≠ -b. If a ≠ -c and a ◎ c = 0, then c =
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Angel food cake, a cholesterol-free cake, solves the problem of how to bake a cake for a health-conscious family.
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The computer company has announced that it will purchase the color-printing division of a rival company for $950 million, which is part of a deal that will make it the largest manufacturer in the office color-printing market.
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PREP2012
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In undisturbed primary forests, the Honduran mahogany grows up to a height of 130 feet, having a buttressed trunk and a crown that spread over the canopy of lesser trees.
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GWD
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Because fish look through water, their eyes are very different from a mammal.
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190113
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The radius of a circle is 10. The area of the sector(fan-shaped) whose center angle is x is A. Which of the following formulas can express A in terms of x?
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The author of the passage is primarily concerned with doing which of the following?
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For almost a hundred years after having its beginning in 1788, England exiled some 160,000 criminals to Australia.
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190113
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$A is divided equally among all departments of three companies and each company has five departments. How much does each department get?
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