The length of a DNA nucleotide building block is about 1 nanometer, or 0.000000001 meters. Fill in the blank to write this number in scientific notation. X10-9

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?