State the dimensions of the matrix.
A. 2 × 3
B. 3 × 2
C. 6
D. 7, -9, -2, -6, -8, -9
Answer: A
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Find the center of mass of a lamina in the shape of an isosceles right triangle with equal sides of length a = 15 if the density at any point is proportional to the square of the distance from the vertex opposite the hypotenuse. Assume the vertex opposite the hypotenuse is located at (0, 0), and the sides are along the positive axes.
What will be an ideal response?
Find the exact value of the expression without the use of a calculator.sin 195° + sin 165° + sin 210°
A. -0.5 B. -1 C. 0.5 D. 0
Use the Zero Exponent Rule to simplify. All variables are nonzero.- 
0
A. -1
B. 
C. 0
D. 1
Solve the problem.Suppose that certain bacteria can double their size and divide every 30 minutes. Write a recursive sequence that describes this growth where each value of n represents a 30-minute interval. Let a1 = 451 represent the initial number of bacteria present.
A. a1 = 451; an = 
an-1 for n > 1.
B. a1 = 451; an = 2 an-1 for n > 1.
C. a1 = 451; an = 2 an+1 for n > 1.
D. an = 2 a1 for all values of n.