Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.a1 = - 
, d = 
A. an = 
n - 3; a20 = 
B. an = - 
n + 3; a20 = - 
C. an = 
n - 
; a20 = 25
D. an = - 
n + 
; a20 = - 32
Answer: A
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Find the particular solution to the given differential equation that satisfies the given conditions.D2y + 2 Dy + 17y = 0; y = 0 when x = 0 and y = e-?/8 when x = ?/8
A. y = e-x cos 4x B. y = e-x sin 4x C. y = e-x (C1 sin 4x + C2 cos 4x) D. y = ex sin 4x
Determine the arithmetic property expressed by the numerical statement.15(10) = 10(15)
A. associative property of multiplication B. associative property of addition C. distributive property D. commutative property of multiplication
Use the horizontal line test to determine whether the function is one-to-one.
A. Yes B. No
Factor out the greatest common factor.120x8y9 + 120x3y7 + 84x6y2
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