Find the indicated probability. Round your answer to 6 decimal places when necessary.A sample of 4 different calculators is randomly selected from a group containing 46 that are defective and 23 that have no defects. What is the probability that all four of the calculators selected are defective?
A. 0.0625
B. 0.1975
C. 0.1888
D. 18.4286
Answer: C
Mathematics
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Graph the function.y = -6 sec 
A. 
B. 
C. 
D. 
Mathematics
Determine the number by which both sides of the equation must be multiplied or divided, as specified, to obtain just x on the left side.
x = 5; multiply by
A. - 
B. 
C. 5
D. 8
Mathematics
Divide and write the result in standard form.
A. 
+ 
i
B. 
+ 
i
C. 
- 
i
D. 
+ 
i
Mathematics
Solve.In the study of alternating electric current, capacitive voltage is given by 
, where f is the number of cycles per second, i is the maximum current, and t is the time in seconds. Solve the equation for t.
A. t = 
Arccos (- 
)
B. t = 2?f cos (- 
)
C. t = 2?f Arccos (- 
)
D. t = 
Arccos (
)
Mathematics