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If P varies jointly as q, r and s - assume this is in direct proportion, then P ∝ qrs so P = kqrs where k is a constant.70 = k x 7 x 5 x 4 = 140k : k = 140/70 = 0.5When q = 2, r = 15 and s = 7 then,P = 0.5 x 2 x 15 x 7 = 105
pq-r, if p is 3, q is 4, and r is -6 is equal to 3 x 4 - (-6), which is equal to 12 + 6, which is equal to 18.
PQR P=2 Q=4 R=5 2 x 4 x 5 = 40
p(q + r) = pq + pr is an example of the distributive property.
You'd have no problem at all if it was [ 26 pigs + 1 quart + 1 rat + 4 quarts + 5 rats ]. You'd add up the quarts, and then you'd add up the rats. You do the same with p's, q's, and r's . 26p + q + r + 4q + 5r = 26p + 5q + 6r