Given the equation y=-(x-1)^2-9. Find the coordinates of the vertex it desccribes.

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%