Consider u = {x|x is a negative real number).
which is an empty set?
{x|x eu and x has a negative cube root}
{x|x eu and x has a negative square root}
{x|x eu and x is equal to the product of a positive number and -1}
{x|x eu and x is equal to the sum of one negative and one positive number}

There are several unique characteristics of qualitative research that make it distinct from quantitative research. describe the aspects of qualitative research and the elements of design that contribute to the rigor of the work. what actions of the researcher can compromise the integrity of the findings?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Dawn is selling her mp3 player for 3 4 of the original price. the original price for the mp3 player was $40. how much is she selling her mp3 player for?