The first several terms of a sequence are given. Find the indicated partial sum.2, -7, 12, -17, . . . ; S6
A. 7
B. -13
C. -15
D. 15
Answer: C
Mathematics
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Use a calculator to find an approximation to the nearest ten-thousandth.ln 51
A. 18.8192 B. 0.2536 C. 3.9318 D. 1.7076
Mathematics
Solve the absolute value equation. 
= 9
A. x = 8 B. x = -21, 105 C. x = -10, 8 D. x = 105
Mathematics
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.3x + 2y + z = 53x - 5y - z = 344x + y + 3z = 5
A. (5, -4, -3) B. (-4, -3, 5) C. (5, -3, -4) D. No solution
Mathematics
Solve the problem.A stack of 10 different cards are shuffled and spread out face down. If 4 cards are turned face up, how many different 4-card combinations are possible?
A. 210 B. 2520 C. 151,200 D. 5040
Mathematics