Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.f(x) = 8x3 - 3x2 + 9x + 5
A. 0 or 1 positive; 0 or 1 negative
B. 0 positive; 1 or 2 negative
C. 0 or 1 positive; 2 negative
D. 0 or 2 positive; 1 negative
Answer: D
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Assume that the U.S Open Golf Tournament was played at Congressional Country club, with prizes ranging from $465,000 for first place to $5,000. Par for the course is 70. The tournament consists of four rounds played on different days. Suppose the scores for each round of the 32 players who placed in the money (more than $17,000) were given on a web site.
The scores for the first round were as follows: 7263687274737171747374717571727179757171747566757576717272737167 The scores for the fourth round for these players were as follows: 6968727472727071717072737372717171697071727374727168697069717373 The stem - and - leaf display of the first round is given below. 63 = score of 6363 6 7 87 71 1 1 1 1 1 1 1 1 1 2 2 2 2 3 3 3 4 4 4 4 5 5 5 5 5 6 9The stem - and - leaf display of the fourth round is given below. 68 = score of 6868 8 9 9 9 970 0 0 0 0 1 1 1 1 1 1 2 2 2 2 2 2 2 3 3 3 3 3 3 4 4Based on the information above, which statement is true? A. Scores are lower in the first round. B. Scores are lower in the fourth round. C. Scores are equal for both the rounds. D. none of these choices
The observed level of significance if a value of 5 is observed.
The probability density function of X is f (x) = 4/x5 over [1, x= ?). Compute the quantity.
Write an equivalent expression using negative exponents. Then simplify, if possible.5-2
A. -25
B. 25
C. 
D. 
Use the given values of the variables to find the value of the expression.5x + 7y for x = 5, y = 7
A. 70 B. 60 C. 74 D. 84