One side of square a is a diagonal of square b what is the ratio of the area of square b to the area of square a? express and answer as common fraction.

check the picture below.

so if each side of square A is x long, its area is then x*x or namely x².

now, we know the diagonal of square B is x long, so let's find how long is each side, namely how long is y.

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.  

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour