Find the nth term {an} of the geometric sequence. When given, r is the common ratio.2, 4, 8, 16, 32, ...
A. an = a1 + 2n
B. an = 2 ? 2n
C. an = 2 ? 2n-1
D. an = 2 ? 2n
Answer: C
Mathematics
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Find the acute angle, in radians, between the lines.-5x - 6y = -8 and 2x - 9y = 1
A. 0.6111 radians B. 2.484 radians C. 0.9133 radians D. 0.6574 radians
Mathematics
The two figures are congruent. Find the measure of the requested side or angle.
A. 
= 21
B. 
= 6
C. 
= 15
D. 
= 12
Mathematics
Express the transform of the given expression in terms of s and ?
.y" + 6y' + 2y, f 
= -1, f' 
= 2
A. 
?
+ s + 4
B. 
?
- s - 8
C. 
?
+ s + 4
D. 
?
+ s + 6
Mathematics
Multiply. Write the answer in simplest form.1 ? 
A. 
B. 
C. 1
D. 
Mathematics