1. Find the value of x in the figure below. 55°
8 in
X
70°
ЭС
B
6 in
Os 5 highes
O 2 inches
6 inches
O 8 inches

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?

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 ?