Simplify the following expression.
2x^2-9-17x^2+10+7x

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)