Write the first four terms of the sequence whose general term is given.an = (-1)n(n + 6)
A. -7, -16, -27, -40
B. 7, 8, 9, 10
C. -7, -8, -9, -10
D. -7, 8, -9, 10
Answer: D
Mathematics
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Predict the general, or nth term, an, of the sequence.4, 16, 64, 256, 1024, . . .
A. 4n B. 4n-1 + 3 C. 12n D. 4 + 12(n - 1)
Mathematics
Decide if the statement is true or false.cos ? is always between 0 and 1.
A. False B. True
Mathematics
Let v and w be two vectors in the plane with given magnitudes. The angle between v and w is ?. Find the expression. Round the answer to the nearest tenth.
= 9, 
= 15, ? = 66°
Find the angle between v + w and w
A. 42.2° B. 36.0° C. 23.8° D. 78.2°
Mathematics
Solve.x-2 - x-1 - 30 = 0
A. - 
, 
B. 
, - 
C. -6, 5
D. 6, -5
Mathematics