Find the indicated term for the sequence.an = n2 - n; a15

A. 15
B. -210
C. 240
D. 210


Answer: D

Mathematics

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Find the indicated cardinal number.Find n(D × B) given that B = {1, 3} and D = {7, 8, 9, 10}.

A.

8

B. 12
C. 16
D. 7

Mathematics

Solve the system of equations graphically. If the system does not have a single ordered pair as a solution, state whether the system is inconsistent of dependent.4x + 3y = 293x - 2y = -8

A. (7, 2)

B. No solution, inconsistent

C. (2, 7)

D. (4, -20)

Mathematics

Simplify the expression. -  + 

A. -1
B.
C. 1
D.

Mathematics

Perform the indicated operations.( 9x4 + 7x2 - 7x ) - ( -8x3 + 5x2 - 7x - 4)

A. 9x4 - 8x3 + 12x2 - 4 B. 9x4 + 8x3 + 2x2 + 4 C. 10x4 + 9x3 + 12x2 + 4 D. 13x7 + 12x3 

Mathematics