Provide an appropriate response.Fill in the blank with "always greater than," "sometimes greater than," "always less than," or "cannot be determined," whichever response is correct. When dividing a positive fraction by 
, the answer is 
the fraction.
A. always greater than
B. always less than
C. sometimes greater than
D. cannot be determined
Answer: A
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In the LORAN (LOng RAnge Navigation) radio navigation system, two radio stations located at A and B transmit simultaneous signals to a ship or an aircraft located at P. The onboard computer converts the time difference in receiving these signals into a distance difference |A| - |B|, and this, according to the definition of a hyperbola, locates the ship or aircraft on one branch of a hyperbola (see the figure). Suppose that station B is located L = 480 mi due east of station A on a coastline. A ship received the signal from B 1280 microseconds (?s) before it received the signal from A. Assuming that radio signals travel at a speed of 1000 ft/?s and if the ship is due north of B, how far off the coastline is the ship? Round your answer to the nearest mile. Select the correct answer.
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Write an inequality using the variable x that corresponds to the set graphed on the number line.
A. -4 < x ? 0 B. -4 < x < 0 C. -4 ? x < 0 D. -4 ? x ? 0
Graph.
- 
= 1
A. 
B. 
C. 
D. 
Express the number in scientific notation.0.0000049312
A. 4.9312 × 106 B. 4.9312 × 10-6 C. 4.9312 × 10-5 D. 4.9312 × 10-7