Solve the problem.A certain radioactive isotope has a half-life of approximately 2000 years. How many years to the nearest year would be required for a given amount of this isotope to decay to 45% of that amount?
A. 1100 years
B. 2259 years
C. 2304 years
D. 1725 years
Answer: C
Mathematics
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Solve the problem.The angle between the spokes of a wagon wheel is 22? 39' 18". Convert this angle to decimal degree format (to four decimal places).
A. 22.6550° B. 22.2488° C. 21.3450° D. 22.9500°
Mathematics
Sketch the angle in standard position.225° 
A. 
B. 
Mathematics
Solve.y1/3 - 5 = 1
A. 1
B. 36
C. 
D. 216
Mathematics
Graph the linear function.G(x) = - 
x
A. 
B. 
C. 
D. 
Mathematics