Please help 1. Find the -circumference- of the circle below.
Round your answer to the nearest hundredth (i. e. 2 decimal places).
(there is two questions) same circle
2. Find the -area- of the circle below.
Round your answer to the nearest hundredth (i. e. 2 decimal places).
Do not write the units. Only write the number.

Do not write the units. Only write the number.

What is perpendicular to y=-1/2x+11

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 ?

Perform the indicated operation. y^2 + 3y - 10 / 3y + 15