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Solve the triangle. a = 21°, c = 105°, c = 5

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs