Find the center of mass of a lamina in the shape of a quarter-circle with radius 15 with density 0 = 3.
Mathematics
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Determine an expression for the instantaneous velocity of an object moving with rectilinear motion according to the function given, if s represents displacement in terms of time.s = 3 - 7t - 6t2
A. 3 - 12t B. -7 - 12t C. 3 + 12t D. -7 + 12t
Mathematics
Evaluate.-9 ÷ 0
A. -9 B. undefined C. 0 D. 1
Mathematics
Graph the parabola.y2 = 20x 
A. 
B. 
C. 
D. 
Mathematics
Add or subtract. Express the answer as a mixed number.
A. 3
B. 12
C. 13
D. 13
Mathematics