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Find the mean of each pair of numbers. Graph the numbers & the mean on a number line. a. 5 and 15
b. -5 and 15
c. -5 and -15
d. 137 and 441? How do I solve f(x+3) when f(x) = 4-x^2? What is the answer for p(34<x<61)=? Calculate the pH and [S2− ] in a 0.17 M H2S solution. Assume Ka1 = 1.0 ✕ 10−7; Ka2 = 1.0 ✕ 10−19.? An extra amount of magnesium is included in the mass you are to use. explain the purpose of adding extra magnesium.?