Simplify the expression. Assume that all variables are positive when they appear.
A. 23
B. -8
C. ±8
D. 64
Answer: B
Mathematics
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The probability of a radar station detecting an enemy plane is 0.55. If 100 stations are in use, what is the expected number of stations that will detect an enemy plane?
A. 100 B. 55 C. 0 D. 98 E. none of these choices
Mathematics
If the frequency is 750 Hz, what is the period?
a. 1.33 msec b. 7.5 msec c. 133 msec d. 1.33 æsec e. 750 æ
Mathematics
The graph of the function f is shown below. Match the function g with the correct graph.g(x) = - 
f(x)
A. 
B. 
C. 
D. 
Mathematics
How closely does the ratio of the dimensions of a polo field (160 yd by 300 yd) approximate ?? Express your answer to the nearest thousandth. ? Enter the absolute value of the difference between ? and the ratio.
Fill in the blank(s) with the appropriate word(s).
Mathematics