A canoeist rows downstream in 0.5 hours and back upstream in 4 hours. What is the rate of the current if the distance rowed is 4 miles in each direction?
?
A. 4.5 mph
B. 3.5 mph
C. 4 mph
D. 2 mph
E. 7 mph
Answer: B
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Determine whether the triangles in the given pair are congruent. If so, state the property that shows the triangles are congruent.
A. congruent; SSS B. congruent; AAS C. not congruent D. congruent; ASA
Find the slope and y-intercept of the line.-3x + 5y = 7
A. slope = 
; y-intercept = - 
B. slope = 
; y-intercept = 
C. slope = 
; y-intercept = 
D. slope = 3; y-intercept = 9
Find the standard deviation.The management of an amusement park wanted to determine the amount of waiting time for the park's oldest roller coaster. The following data represents a random sample of waiting times in minutes (rounded to the nearest minute): 14 7 11 15 17 7 7 11 13What is the standard deviation? Round your answer to one decimal place.
A. 3.5 min B. 1.4 min C. 4.0 min D. 3.7 min
Simplify the radical.
A. 
B. - 
C. - 
D. 