Solve the system of equations.x + 2y +z= 2x +y + 5z + w = -1
A. (-9z - 2w - 2, 4z + w + 3, z, w)
B. No solution
C. (-w - 4, w + 2, -w + 2, w)
D. (-9z - 2w - 4, 4z + w + 3, z, w)
Answer: D
Mathematics
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Solve the problem.A certain radioactive isotope has a half-life of approximately 1450 years. How many years, to the nearest whole number, would be required for a given amount of this isotope to decay to 35% of that amount?
A. 901 years B. 942.5 years C. 2196 years D. 2161 years
Mathematics
Solve by the quadratic formula.2x2 - 5x + 5 = 0
A. 
B. 
C. 
D. 
Mathematics
Suppose that F(x) = f(g(x)) and g(14) = 2, 
(14) = 4, 
(14) = 15, and (2) = 13. Find 
What will be an ideal response?
Mathematics
Rationalize the denominator. Assume that no radicands were formed by raising negative numbers to even powers. 
A. 41
B. 
C. 5
D. 
Mathematics