Use finger multiplication to do the calculations.
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Fill in the blank(s) with the appropriate word(s).
372
Mathematics
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Estimate the magnitude of the error involved in using the sum of the first four terms to approximate the sum of the entire series.
, -1 < t ? 1
A. 0.20
B. 
C. 
D. 
Mathematics
Perform the indicated calculation.Calculate a21 + a22a12 for the matrix A = 
.
A. -20 B. 44 C. 285 D. -12
Mathematics
Solve the system by using Gaussian elimination with backward substitution or by reducing the matrix to reduced-row echelon form.x - y + z = 4x + y + z = 0x + y - z = 2
A. No solution B. (3, -1, -2) C. (3, -2, -1) D. (-1, 3, -2)
Mathematics
Simplify the radical. Assume that all variables represent positive numbers.
A. 55
B. 11
C. 77
D. 121
Mathematics