Lisa is 12 centimeters taller than her friend ian. ian is 16 centimeters taller than jim. every month, their heights increase by 2 centimeters. in 8 months, the sum of ian's and jim's heights will be 170 centimeters more than lisa's height. how tall is ian now? let h be ian'a height today in centimeters.

(h+16)++16=+170

ian is _ centimeters tall now.

Which statement describes surface features called maria on the moon

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

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 ?