: Coordinate Proof. Consider AABC with vertices A(2, 3) and B(6, 6) and C(8,-5).
a) Draw AABC on graph paper. Is this a right triangle? JUSTIFY your answer.
b) Reflect A ABC across AC to create AA'B'C' Find the location of B'. What kind of
triangle is ABB'C':? JUSTIFY your answer.

(co 3) the times that customers spend in a book store are normally distributed with a mean of 39.5 minutes and a standard deviation of 9.4 minutes. a random sample of 25 customers has a mean of 36.1 minutes or less. would this outcome be considered unusual, so that the store should reconsider its displays? no, the probability of this outcome at 0.035, would be considered usual, so there is no problem yes, the probability of this outcome at 0.035, would be considered unusual, so the display should be redone no the probability of this outcome at 0.359 would be considered usual, so there is no problem yes, the probability of this outcome at 0.965 would be considered unusual, so the display should be redone