Afour-person committee is chosen from a grous of eight boys and six girls. if students are chosen at random, what is the probability that the committee consists of all boys?

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

The function models the number of accidents per 50 million miles driven as a function

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years