Find the indicated term of the geometric sequence.a9 when a1 = -5 and r = 3.

A. -98,415
B. -32,805
C. 19
D. -32,801


Answer: B

Mathematics

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Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 7i + 3j , v = i - j

A. 4; 4k B. 10; -10k C. 10; -k D. 4; -4k

Mathematics

Find any relative maximum or minimum points of the given function.y = x4 - 2x2 - 9

A. Maxima at (1, -10), (-1, 8); minimum at (0, -9) B. Minimum at (0, -9), maximum at (1, -10) C. Minima at (1, -10), (-1, -10); maximum at (0, -9) D. Minimum at (-1, -10), maximum at (1, -10)

Mathematics

Solve the equation. Write complex solutions in standard form.x2 - 8x + 41 = 0

A. -4 ± 5i B. 9, -1 C. 4 ± 5i D. 8 ± 10i

Mathematics

Current postal regulations state that no package may be sent if its combined length, width, and height exceed 70 in. What are the possible dimensions of a box to be mailed with equal height and width if the length is three times the height? ?

A. The height and width must each be 15 in. or less and the length 42 in. or less. B. The height and width must each be 15 in. or more and the length 42 in. or more. C. The height and width must each be 14 in. or less and the length 42 in. or less. D. The height and width must each be 14 in. or less and the length 56 in. or less. E. The height and width must each be 14 in. or more and the length 42 in. or more.

Mathematics