Find the first 4 terms of the recursively defined sequence.a1 = 4, a2 = 2, an + 1 = an - an - 1
A. 4, 2, 0, -2
B. 4, 2, 6, 8
C. 4, 2, -2, -4
D. 4, 2, 2, -2
Answer: C
Mathematics
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If y varies inversely as x, find the inverse variation equation for the situation.y = 15 when x = 3
A. y = 
B. y = 
C. y = 
D. y = 5x
Mathematics
The two triangles below are similar. Find the missing length(s).
A. x = 4.0; y = 3.9 B. x = 3.5; y = 3.6 C. x = 3.5; y = 3.9 D. x = 2.24; y = 3.6
Mathematics
Find the sum.Find the sum of the first 20 terms of the arithmetic sequence: -8, -18, -28, -38, . . .
A. -2055 B. -2060 C. -208 D. -2160
Mathematics
Find a quadratic inequality whose solution is given.
A. x2 - 2x - 15 > 0 B. x2 - 2x + 15 > 0 C. x2 - 2x + 15 < 0 D. x2 - 2x - 15 < 0
Mathematics