Which of the following most logically completes the argument below?Davison River farmers are currently deciding between planting winter wheat this fall or spring wheat next spring. Winter wheat and spring wheat are usually about equally profitable. Because of new government restrictions ...
A company plans to develop a prototype weeding machine that uses cutting blades with optical sensors and microprocessors that distinguish weeds from crop plants by differences in shade of color. The inventor of the machine claims that it will reduce labor costs by virtually eliminating th...
Which of the following most logically completes the passage below?Heavy rains during Centralia’s corn planting season prevented some farmers there from planting corn. It is now the planting season for soybeans, another of Centralia’s principal crops, and those fields originally intend...
Until now, only injectable vaccines against influenza have been available. Parents are reluctant to subject children to the pain of injections, but adults, who are at risk of serious complications from influenza, are commonly vaccinated. A new influenza vaccine, administered painlessly i...
Hunter: Hunters alone are blamed for the decline in Greenrock National Forest’s deer population over the past ten years. Yet clearly, black bears have also played an important role in this decline. In the past ten years, the forest’s protected black bear population has risen sharply...
The yield per acre of coffee berries varies enormously in that a single tree, depending on both its size and on climate and altitude, could produce enough berries to make between one and twelve pounds of dried beans a year.
The new image of Stone Age people as systematic hunters of large animals, rather than merely scavenging for meat, have emerged from the examination of tools found in Germany, including three wooden spears that archaeologists believe to be about 400,000 years old.
The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force a rethinking of the role of comets in the delivery of organic compounds to the evolving Earth.
Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of others.
If current trends continue, by the year 2010 carbon emissions in the United States will soar to a level more than one-third higher than were those in 1990, according to official projections.
P, Q, and R are located in a flat region of a certain state. Q is x miles due east o...
What is the greatest possible area of a triangular region with one vertex at the center of a circle&...
If M=√4+3√4+4√4 then the value of M is
If x is an even integer, which of the following must be an odd integer?
If x ≠0, then √x2x
If k and t are integers and k2−t2 is an odd integer, which of the following must be an even integer?I. k+t+2II . k2+2kt+t2 III. k2+t2
If x and y are positive, which of the following must be greater than 1√x+y ?I √x+y2x &nbs...
Which of the following is closest to √82−42
If y=4+(x−3)2 , then y is least when x =
If (73/4)n=7 , what is the value of n ?
If x < 0, then √(−x)2 is
The value of (−89)1/3 is
If the operation @ is defined for all positive integers x and w by x @ w = 2x/2w , the...
If a = 1 and (a−b)c =1 , which of the following is NOT a possible value of b ?
Of the following integers, which is the closest approximation to (√3+√7)2
Which of the following is closest to the value of999100+1999
In the rectangular coordinate system above, the area of triangular region PQR is
For which of the following functions is f(a + b) = f(a) + f(b) for all positive numbers a and&n...
Which of the following inequalities has a solution set that, when graphed on the number line, is a s...