In a library, the ratio of students with younger siblings to those without younger siblings was 4:3. There were 42 students without younger siblings.
Let y be the number of students with younger siblings. Set up a proportion to solve
for y. Then, find the total number of students.

Which segments are congruent? o jn and ln o jn and nm o in and nk onk and nm

The price of one share of a company’s stock declined $13.89 every day for 2.5 days what was the stocks total decline in price

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?