(04.01 LC) Triangle XYZ is shown below with line AY passing through the center: Triangle XYZ is shown with line YA running vertically through the center of the figure. If triangle XYZ is dilated by a scale factor of four about the center of the triangle to create triangle X'Y'Z', dilated line Y'A' will

The trigonometric ratios sine and secant are reciprocals of each other

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.

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 ?