A 5 b 7 c 10 d 12 e 14 answer q7 if x< 0 then √-x

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Unformatted text preview: A. 5 B. 7 C. 10 D. 12 E. 14 Answer: ------------------------------------------------------------------------------------------------------------ Q7: If x < 0, then √ (-x • x ) is A. -x B. -1 C. 1 D. x E. √ x Answer: ------------------------------------------------------------------------------------------------------------ Q8: A thin piece of wire 40 meters long is cut into two pieces. One piece is used to form a circle with radius r, and the other is used to form a square. No wire is left over. Which of the following represents the total area, in square meters, of the circular and the square regions in terms of r? 2 A. π r 2 B. π r 2 + 10 C. π r 2 + ¼ π 2 r 2 D. π r 2 + (40-2 π r) 2 E. π r 2 + (10- ½ π r) 2 Answer: ------------------------------------------------------------------------------------------------------------ Q9: If r is a constant and a n = r • n for all positive integers n, for how many values of n is a n < 100? (1) a 50 = 500 (2) a 100 + a 105 = 2,050 A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient. Answer: ------------------------------------------------------------------------------------------------------------ Q10: If the length of a certain rectangle is 2 greater than the width of the rectangle, what is the perimeter of the rectangle? (1) The length of each diagonal of the rectangle is 10. (2) The area of the rectangular region is 48. A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient. Answer: ------------------------------------------------------------------------------------------------------------ Q11: If s is the product of the integers from 100 to 200, inclusive, and t is the product of the integers from 100 to 201, inclusive, what is 1/s + 1/t in terms of t? A. (201) 2 /t B. [(202)(201)]/t C. 201/t D. 202/t E. [(202)(201)]/t 2 Answer: 3------------------------------------------------------------------------------------------------------------ Q12: A certain dealership has a number of cars to be sold by its salespeople. How many cars are to be sold? (1) If each of the salespeople sales 4 of the cars, 23 cars will remain unsold. (2) If each of the salespeople sales 6 of the cars, 5 cars will remain unsold....
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A 5 B 7 C 10 D 12 E 14 Answer Q7 If x< 0 then √-x • x...

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