Determine the size of the matrix.
A. 4
B. 4 × 1
C. 1 × 4
D. 1
Answer: C
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Solve the problem.Find the moment of inertia about the y-axis of the thin semicircular region of constant density 
bounded by the x-axis and the curve 
.
A. 15,000? B. 30,000? C. 11,250? D. 22,500?
Perform the indicated operation.A factor used in measuring the loudness sensed by the human ear is 
0.3, where I is the intensity of the sound and I0 is a reference intensity. Evaluate this factor for I = 3.3 × 10-6 W/m2 and I0 = 1.0 × 10-12 W/m2 to two significant digits.
A. 0.011 B. 0.023 C. 44 D. 90
Indicate whether the equation illustrates the multiplication property of 0, the multiplicative identity, the commutative property of multiplication, or the associative property of multiplication. 8(1 ? 7) = (8 ? 1) ? 7
A. Associative property of multiplication B. Multiplication property of zero C. Multiplicative identity D. Commutative property of multiplication
Solve the equation by the method of your choice. Simplify irrational solutions, if possible.3x2 - 5x - 8 = 0
A. 
B. 
C. 
D. 