Circle I is dilated with the origin as the center of dilation to create Circle II. What is the scale factor used in the dilation? If the scale factor is a fraction. A. 2
B. 4
C. 1/2
D. 3/4​

Situation: . find the substance's half-life, in days. round your answer to the nearest tenth. a 11 gram sample of a substance that's used to treat thyroid disorders has a k. value of 0.1247. enter the correct answer n - noekt done no - initial mass (at time t = 0) n - mass at timet k a positive constant that depends on the substance itself and on the units used to measure time t= time, in days