A similar analysis was done to explore the relationship between time spent studying and performance on the final exam. That correlation was found to be 0.63. What proportion of
the variation in final exam scores was left unexplained by this analysis? (report as a decimal
and round to 3 decimal places)

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0