Solve the equation. 
= 12
A. 144
B. 12
C. -12
D. 12, -12
Answer: D
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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 2t)i + (4 sin t)j
A. a = (-4 cos 2t)i + (-16 sin t)j B. a = (-4 cos 2t)i + (-4 sin t)j C. a = (-2 cos 2t)i + (4 sin t)j D. a = (4 cos 2t)i + (-4 sin t)j
Provide an appropriate response.Find the measure of angle 1.
A. 175° B. 80° C. 165° D. 170°
Multiply.(x3 + 13)2
A. x6 + 169 B. x3 + 169 C. x6 + 26x3 + 169 D. 169x6 + 26x3 + 169
Use Descartes' rule of signs to find the number of possible positive, negative, and nonreal roots for the following equation.
?
?
A. 1 positive; 1 negative; 1 nonreal B. 0 positive; 0 negative; 3 nonreal C. 1 positive; 0 or 2 negative; 0 or 2 nonreal D. 0 or 2 positive; 1 negative; 0 or 2 nonreal E. none of these