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Identify the 16th term of a geometric sequence where a1 = 4 and a8 = −8,748.? I need to figure out how to prove tan(x/2)= sinx/1+cosx thank you!? What limits the size of solar power farms? How you use quadratic formula to solve the equation 3t^2 - 5t - 9 = 0 to one dec place and find discriminant of the expression4x^2 + 4x + 1? Find the amount of heat that is required to warm 115kg of water for your bath by 22 degrees C. Q=?