F(a^2) = 9x^2 -2 what the anwser

How can you find the mean absolute deviation (mad) for this set of data?

Is a square always, sometimes, or never a parallelogram

Given: jk ||lm prove: _2 = 27 statement justification 1. jk ||lm 1. given 2.26 = 27 3.22 = 26 2. 3. 4. _2 = 27 4. corresponding angles theorem transitive property of equality vertical angles theorem substitution property of equality