Solve the system by substitution. If the system is inconsistent and has no solution, state this. If the system is dependent, write the form of the solution for any real number x. x = 4 - 4y3x + 5y = 5
A. (1, 0)
B. (-1, 0)
C. (0, 1)
D. Inconsistent, ?
Answer: C
Mathematics
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Find the coordinates of the centroid of the curve.Find the coordinates of the centroid of the curve x = 4 cos t + 4t sin t, y = 4 sin t - 4t cos t, 
A. (
, 
) = 
B. (
, 
) = 
C. (
, 
) = 
D. (
, 
) = 
Mathematics
Solve the problem.The charcoal from a tree killed in a volcanic eruption contained 67.2% of the 
found in living matter. How old is the tree, to the nearest year? Use 
for the half-life of 
A. 3269 years B. 1570 years C. 5700 years D. 2266 years
Mathematics
Match the given equation with one of the graphs.4x2 + y2 - 56x + 192 = 0
A. 
B. 
C. 
D. 
Mathematics
Graph the equation.16x2 + y2 = 16
A. 
B. 
C. 
D. 
Mathematics