Write an expression to represent the length of each side of the rug.

length of side = 10x + 3

Step-by-step explanation:

The area of a square = s² ( s is the length of the side )

given

A = 100x² + 60x + 9 ← perfect square in the form

(a + b)² = a² + 2ab + b²

100x² = (10x)² ⇒ a = 10x

9 = 3² ⇒ b = 3

and 2ab = 2 × 10x × 3 = 60x, hence

100x² + 60x + 9 = (10x + 3)²

s = = 10x + 3 ← length of side

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.