Find the common ratio r for the given infinite geometric sequence.4, 16, 64, 256, 1024, . . .
A. 16
B. -4
C. 
D. 4
Answer: D
Mathematics
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Find the angle between the pair of vectors to the nearest tenth of a degree.7i - 5j, 2i - 7j
A. 114.4° B. 42.0° C. 38.5° D. 126.9°
Mathematics
Determine whether the statement is true or false.The function f(x) = 
is decreasing on the interval (0, ?)
A. True B. False
Mathematics
Solve.On a map, 1 in. represents 120 miles. How much does 
in. represent?
A. 72 mi B. 62 mi C. 200 mi D. 82 mi
Mathematics
Solve for the variable.
y + 
= - 
y - 
A. y = 
B. y = - 
C. y = - 
D. y = 
Mathematics