Solve the system by either elimination or substitution. Verify your work by using "intersect" on your graphing calculator of by checking that your result satisfies both equations of the system.
A. (-4.4, 17)
B. (17, -4.4)
C. empty set solution; inconsistent system
D. all points on the line 2x + 5y = 12; dependent system
Answer: B
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Translate the phrase into a mathematical expression and then find the result.205 gallons less than 1656 gallons
A. 205 + 1656; 1761 gallons B. 1656 + 205; 1861 gallons C. 1656 - 205; 1441 gallons D. 1656 - 205; 1451 gallons
A passenger in an airplane at an altitude of a = 20 kilometers sees two towns directly to the east of the plane. The angles of depression to the towns are 28º and 55º (see figure). How far apart are the towns? How far apart are the ships? Round your answer to one decimal place.
?
?
A. 23.6 km B. 24.6 km C. 25.6 km D. 26.6 km E. 27.6 km
Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places.(44, -46) and (8, 37)
A. 2623
B. 
? 52.773
C. 
? 90.471
D. 2785
Find the mode or modes (if any).85, 68, 32, 68, 29, 85
A. 85 B. 68 C. 61.2 D. 85, 68