Find the exact value of the expression. Do not use a calculator.cot 45° - sin 60°
A. 
B. 
C. - 
D. 
Answer: A
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Provide an appropriate response.A shipment of 20 digital cameras contains two that are defective. A random sample of three is selected and tested. Let X be the random variable associated with the number of defective cameras in a sample. Find the probability distribution of X and the expected number of defective cameras in a sample.
What will be an ideal response?
Solve the problem.The table shows the total amount of precipitation (in inches) in a certain US city in 17 different years. Find the interquartile range.
A. 7.6 in. B. 7.9 in. C. 6.9 in. D. 7.2 in.
Solve the problem.A tree casts a shadow 19 m long. At the same time, the shadow cast by a 39-cm tall statue is 89 cm long. Find the height of the tree. Round results to the nearest unit.
A. 42 m B. 7 m C. 43 m D. 8 m
Solve the variation problem.Suppose y varies inversely with x, and y = 32 when x = 7. Find y when x = 56.
A. y = 49 B. y = 8 C. y = 4 D. y = 28