A ship is anchored off a long straight shoreline that runs north and south. From two observation points 20 miles apart on shore, the bearings of the ship are N 28° E and S 53° E. What is the distance from the ship to each of the observation points?
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Apply the rules regarding the use of significant digits after all computations are complete.
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A. 16 miles and 11.5 miles
B. 14 miles and 9.5 miles
C. 14 miles and 11.5 miles
D. 17 miles and 8.0 miles
E. 16 miles and 9.5 miles
Answer: E
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over the region bounded by the x-axis, line 
and curve 
A. 9 B. 10 C. 8 D. 1
Answer the following statement(s) true (T) or false (F)
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Use the empirical probability formula to solve the exercise. Express the answer as a fraction. Then express the probability as a decimal, rounded to the nearest thousandth, if necessary.In 1999 the stock market took big swings up and down. A survey of 998 adult investors asked how often they tracked their portfolio. The table shows the investor responses. What is the probability that an adult investor tracks his or her portfolio daily?
A. 
; 0.288
B. 
; 0.145
C. 
; 0.279
D. 
; 0.235
Solve the problem. Express your answer in scientific notation, and round to one decimal place. The mass of an electron is approximately 9.11 × 10-28 grams. Find the mass of 813,000,000 electrons.
A. 7.4 × 10-17 grams B. 7.4 × 10-19 grams C. 7.4 × 10-20 grams D. 7.4 × 10-18 grams