If cos f° = 4/9 and the measure of XW is 16 units, what is the measure of XY

i'm assuming it's looking for the missing length, which should be 4cm

hope this !

b

step-by-step explanation:

the word superfluous means unnecessary

the volume is the product of the area of the base, 3x(3x+4), and the height, 3x-1

step-by-step explanation:

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.