Previous 6v
Next
Post Test: Linear Equations
Submit Test
Reader Tools
Drag each label to the correct location on the image.
Identify which equations have one solution, Infinitely many solutions, or no solution.
ky+3.2y = 20 $ +22–4 = 42+32–23 3z +2.5 = 3.2 +32 1.14år +2 = 3.1+
20+4 = 30 +
4.5% = 3.2+4.57
No Solution
One Solution
Infinitely Many Solutions

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 ?