Find the common ratio, r, for the geometric sequence.
, 
, 
, 
, 
, . . .
A. 5
B. 4
C. 6
D. 256
Answer: B
Mathematics
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Evaluate the integral using the given substitution.
dt, u = 2 - sin 
A. 
3sin 
+ C
B. 
3 + C
C. 5
3 + C
D. - 
3 + C
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (-2)2(-2)3
A. -64
B. -32
C. 
D. 
Mathematics
Find the values that make the equation true.
= 
A. x = 6; y = 4; z = 8 B. x = -8; y = 4; z = 6 C. x = 8; y = 6; z = 4 D. x = -8; y = -6; z = -4
Mathematics
Factor the trinomial completely. If the polynomial cannot be factored, write "prime."x2 + 20x + 21
A. prime B. (x + 21)(x - 1) C. (x + 21)(x + 1) D. (x + 7)(x + 3)
Mathematics