Let u =Vector X Y where X(–4, 6) and Y(8, 3). What is Magnitude of 2 u? 6 StartRoot 17 EndRoot 18 3 StartRoot 17 EndRoot 612

i used to know how to do this in 7th but i forget easily

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.  

a = 3.14

b = 18

c = 18/5 or 3.6 or 3 3/5

step-by-step explanation: