Find the rate of change. Use appropriate units.The line graph represents the height of the sand in an hourglass (in mm) after x minutes. Find the rate of change from (10, 7.5) to (55, 41.25). 
A. .85 mm per second
B. 1.3 mm per second
C. 1 mm per second
D. .75 mm per second
Answer: D
Mathematics
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Find the exact value by using a half-angle identity.cos 
A. 
B. - 
C. - 
D. 
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Determine whether the sequence is geometric.1, 
, 15, 15
, . . .
A. Geometric B. Not geometric
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Complete.66.09 m = 
mm
A. 66,090 B. 0.661 C. 6,609 D. 0.0661
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Using the graph of the hyperbola, determine the coordinates of the vertices and foci, and the equations of the asymptotes.
A. Vertices (0, ±2), foci (±
, 0), asymptotes y = x and y = -x
B. Vertices (±5, 0), foci (±
, 0), asymptotes y = 
x and y = - 
x
C. Vertices (±5, 0), foci (0, ±2), asymptotes y = x and y = -x
D. Vertices (±5, 0), foci (±
, 0), asymptotes y = 
x and y = - 
x
Mathematics