Find the real solutions of the equation.x = 7
A. {0, 7}
B. {-7, 7}
C. {0, 49}
D. {-49, 49}
Answer: C
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) = (4 cos t)i + (3 sin t)j
A. a = (4 cos t)i + (3 sin t)j B. a = (-4 sin t)i + (-3 cos t)j C. a = (-4 cos t)i + (-3 sin t)j D. a = (4 sin t)i + (3 cos t)j
Mathematics
Provide an appropriate response.Which day had the best sales?
A. Saturday B. Monday C. Friday D. Wednesday
Mathematics
Graph the function.f(t) = sin 4?t 
A. 
B. 
C. 
D. 
Mathematics
Decide whether any pair of triangles in the figure is necessarily congruent. If so, write an appropriate congruence statement and specify which congruence principle applies.
Mathematics