Afamily has 8 girls and 4 boys. a total of 2 children must be chosen to speak on the behalf of the family at a local benefit. what is the probability that 2 girls and no boys are chosen?

a. 7/55
b. 14/33
c. 12/33
d. 1/6

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