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on a coordinate grid, point p is at (5, 2) and point r is at (−3, −4). points q and s are a reflection of both points across the x-axis. what are the coordinates of q and s?
q(−5, 2), s(3, −4)
q(−5, −2), s(3, 4)
q(5, −2), s(−3, 4)
q(−5, 2), s(−3, 4)

What is sin 7x/4 ? i need on this urgent trig

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 ?

Why is partitioning a directed line segment into a ratio of 1: 3 not the same as finding the length of the directed line segment?