Find the mean, ?, for the binomial distribution which has the stated values of n and p. Round answer to the nearest tenth.n = 20; p = 0.2
A. ? = 4.3
B. ? = 3.5
C. ? = 4.0
D. ? = 4.7
Answer: C
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Establish the identity.cot2x = (csc x - 1)(csc x + 1)
What will be an ideal response?
A waste water system is being installed in a small town.The large pipes required to reach from the town to the water treatment plant come in 20-foot and 24-foot lengths. The city planner finds that twelve fewer of the 24-foot pipes will be required than if the 20-foot pipes were used.What is the distance from the town to the water treatment plant?
What will be an ideal response?
The total annual revenue R of the Miramar Resorts Hotel is related to the amount of money x the hotel spends on advertising its services by the function
?
where both R and x are measured in thousands of dollars.
?
Use this function to:
?
a) Find the interval where the graph of R is concave upward and the interval where the graph of R is concave downward.
b) Find the inflection point of R.
c) Determine if it would it be more beneficial for the hotel to increase its advertising budget slightly when the budget is $240,000 or when it is $260,000.
?
A. concave downward on 
;
concave upward on 
;
inflection point is 
B. concave upward on
;concave downward on 
;
inflection point is 
C. concave upward on
;concave downward on 
;
inflection point is 
D. concave downward on
;concave upward on 
;
inflection point is 
E. concave upward on
;concave downward on 
;
inflection point is 
Solve the system of equations by elimination.
A. x = 2, y = 8; (2, 8) B. x = 3, y = 9; (3, 9) C. x = 3, y = 8; (3, 8) D. x = 2, y = 9; (2, 9)