WILL GIVE BRAINLIEST A housekeeping service bought several cases of paper towels. The paper towels come in cases of 12 rolls or 16 rolls. Last week the service bought 22 cases of paper towels containing a total of 320 rolls. How many 16-roll cases did the service buy?
A
8

B
11

C
14

D
20

Which of the following vectors are orthogonal to (2,1)? check all that apply

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 ?

What is the value of -3/4 to the 4th power? -256/81 -81/256 81/256 256/81