A movie theater would like to use a survey to determine which factors are most important to those who come to their theater. Which of the following procedures would be most appropriate for obtaining a statistically unbiased sample?
?
A. Survey a random selection of people who are leaving the theater after watching a movie.
B. Survey a random selection of shoppers in the mall.
C. Survey a random selection of people passing by the theater in the mall in front of the theater.
D. Induce people to answer survey questions by offering discount coupons for various city events, including the movie theater.
E. None of these is a good measure.
Answer: A
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An expression that occurs in calculus is given. Factor completely.3(x + 5)2(2x - 1)2 + 4(x + 5)3(2x - 1)
A. (x + 5)2(10x + 17) B. (x + 5)2(2x - 1)(x + 17) C. (x + 5)2(2x - 1)(10x + 17) D. (x + 5)(2x - 1)(10x + 17)
Write the expression as a logarithm of a single expression. Assume that variables represent positive numbers.logbx - logby
A. logb
B. log2b
C. logbx - y
D. logb
Supply the missing numbers. Round decimals to the nearest thousandth and percents to the nearest tenth of a percent.fractiondecimalpercent?225%
A.
2 ? | 22.5 |
B.
| 2? | 22.5 |
C.
| 2? | 2.25 |
D.
2 ? | 2.25 |
Find the LCM of the given polynomials.x2 + 12x + 36, x2 + 6x
A. x(x + 6)2 B. x(x + 1)(x + 6) C. x(x + 6) D. (x + 6)2