PQOTD 12/28/09

Two curves, y = px2 and y = qx2 intersect rectangle ABCD at its four corners. Which of the following expressions gives the area of the rectangle? (A) 4 · (p + q) (B) 8 · (p + q) (C) 16 · (p + q) (D) 8 · (p – q) (E) 16 · (p [...]

PQOTD 12/23/09

Which choice most improves the underlined part of the sentence below? If the sentence is correct as is, choose (A). A conjunction is used to connect words and sentences together. A. words and sentences together. B. words or sentences together. C. words and sentences. D. words or sentences. E. words to sentences. “Together” is redundant [...]

PQOTD 12/18/09

A line segment containing the points (0, 0) and (12, 6) also contains:  A: (6,4)                 B: (2,4)                          C: (8, 4)                    D: (1,0)                  E: (0,-6) First, we need to figure out the equation for this line. Using the slope formula, we know that the slope of this line is 1/2. Furthermore, we know that that the y-intercept is 0 [...]

PQOTD 12/11/09

There is great unevenness in his later plays; there are moments of the greatest ____ in the midst of great ____. A. lucidity – enlightenment B. frivolity – triteness C. insight – banality D. obscurity – ambivalence E. profundity – wisdom If his later plays demonstrate “unevenness,” then what follows is going to be a [...]

PQOTD 12/4/09

A radioactive chemical decays 20 percent each day. If 48 pounds of this chemical remain today, how many pounds of this chemical were present two days ago? A. 75 B. 72 C. 70 D. 66 E. 60 We first need to go back to the day before. If 48 pounds of this chemical remain, and [...]

PQOTD 11/30/09

For decades many scientists ________ that global warming posed a grave risk to the planet, but in the twenty-first century nearly all of them ________ that the threat is real.   a) agreed…insist   b) denied…concur   c) argued…accede   d) contended…acknowledge   e) disaffirmed…reject When you see the word “but” on a sentence completion [...]