Write the first four terms of {an}.an = sin (n?)
A. 1, 1, 1, 1
B. 1, 0, -1, 0
C. 0, 0, 0, 0
D. 0, 1, 0, -1
Answer: C
Mathematics
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Perform the operations indicated.(-6)(-9)
A. 44 B. 540 C. 54 D. 48
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Solve the given problem using Galileo's formula, d = 16t2. Round answer to the nearest tenth.A young boy is delighted to drop various objects from a hotel balcony to the ground below. If he is 
above the ground, how long does it take for one of the objects to fall to the ground?
A. 225.0 sec B. 14.1 sec C. 15 sec D. 3.8 sec
Mathematics
Evaluate the exponential function for the given value.f(x) = 52x-1, f(1.8)
A. 0.280 B. ? 327.316 C. 20 D. ? 65.663
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Find the reciprocal of the expression.
A. 
B. 1 - 
C. - 
D. 
Mathematics