Find the first five terms of the geometric sequence with the given first term and common ratio.a1 = 8, r = -6
A. 8, 48, 288, 1728, 10,368
B. -48, 288, -1728, 10,368, -62,208
C. 8, 2, -12, -10, -16
D. 8, -48, 288, -1728, 10,368
Answer: D
Mathematics
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Refer to the figure in which O is the center of the circle, 
and 
are tangents, m?AOD = 120°, AO = 5 m, PC = 6 m, PE = 18 m, PB = 7 m, AG = 8, and DG = 4m.
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Solve.-5x - y + 6z = 40-7x + 5z = 31 4y + z = 25
A. (-2, 9, 4) B. (2, 9, 4) C. (2, 4, 9) D. (-2, 4, 4)
Mathematics
Simplify.-(-7a + 6b - 6c)
A. 7a + 6b - 6c B. -7a + 6b - 6c C. 7a + 6b + 6c D. 7a - 6b + 6c
Mathematics
Is the matrix regular?
Mathematics