Use n = 4 to approximate the value of the integral by the trapezoidal rule.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Determine whether the data represent direct variation, inverse variation, or neither.
A. Neither B. Inverse C. Direct
Mathematics
Solve the system of equations using matrices. Use Gauss-Jordan elimination.3x + 5y + 2w = -122x + 6z - w = -5 -2y + 3z - 3w =-3-x + 2y + 4z + w = -2
A. {(-1, -3, 0, 3)} B. {(-1, 3, 0, -3)} C. {(1, -3, 0, 3)} D. {(1, 3, 0, -3)}
Mathematics
Write an inequality involving the variable x that describes the set of numbers graphed.
A. -2 < x ? 2 B. -2 ? x ? 2 C. -2 ? x < 2 D. -2 < x < 2
Mathematics
Simplify.32 -7(1)
A. 2 B. -16 C. 9 D. 1
Mathematics