Perform the indicated row operations on the given matrix.
A. 
B. 
C. 
D. 
Answer: D
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Find the unit tangent vector T and the principal unit normal vector N. r(t) = (10t sin t + 10cos t)i + (10t cos t - 10 sin t)j - 10k
A. T = (-cos t)i - (sin t)j; N = (sin t)i + (cos t)j B. T = (cos t)i - (sin t)j; N = (-sin t)i - (cos t)j C. T = (-cos t)i - (sin t)j; N = (sin t)i - (cos t)j D. T = (cos t)i + (sin t)j; N = (-sin t)i + (cos t)j
Solve.Given that loga11 = 2.398 and loga5 = 1.609, evaluate loga
.
A. 4.007 B. -0.788 C. 1.49 D. 0.789
The number n of incidents of family violence requiring police response appears to be related to d, the money spent on crisis intervention, by the equation 
. What expenditure would reduce the number of incidents to 384?
?
A. $49,200 B. $9,200 C. $109,200 D. $162,800 E. $71,200
Graph the system of inequalities. Shade the region that represents the solution set.x2 + y2 ? 81x + y > 4
A. 
B. 
C. 
D. 