Complete the factoring.63x2 + 8x - 16 = (9x - 4)( )
A. 7x + 4
B. 4x - 7
C. 4x + 7
D. 7x - 4
Answer: A
Mathematics
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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (cos 5t)i + (4 sin t)j
A. a = (-5 cos 5t)i + (4 sin t)j B. a = (-25 cos 5t)i + (-4 sin t)j C. a = (-25 cos 5t)i + (-16 sin t)j D. a = (25 cos 5t)i + (-4 sin t)j
Mathematics
Determine whether the sequence is geometric.3, -9, 27, -81, 243, . . .
A. Geometric B. Not geometric
Mathematics
Write the fraction in lowest terms.
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation and, if possible, simplify.
? 
A. 
B. 
C. 
D. 
Mathematics