Find the maximum area of a rectangle that can be circumscribed about a given rectangle with length L = 8 and width W = 3.
60.5
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.r(t) = (5 cos t)i + (8 sin t)jFind the acceleration vector.
A. a(t) = (-5 cos t)i + (-8 sin t)j B. a(t) = (5 cos t)i + (8 sin t)j C. a(t) = (5 sin t)i + (8 cos t)j D. a(t) = (-5 sin t)i + (-8 cos t)j
Mathematics
Factor.r2 - 6r + 9
A. (r - 3)2 B. (r + 3)2 C. (r - 6)(r + 6) D. (r - 3)(r + 3)
Mathematics
Simplify the expression.(7.4)2 + 1.1 - 1.2
A. 7.3 B. 54.66 C. 53.29 D. 14.7
Mathematics
Solve the problem.A rock falls from a tower that is 208 ft high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h=0)?
A. 13.9 s B. 14.4 s C. 3.6 s D. 2,704 s
Mathematics