1 3/4 sides inches of the area is 42 long and 29 3/4 inches high how many tiles will he need

First you should find the area of wall he's tiling. You can do it by multiplying its length and height.

After that, the area of one tile.

And now remains only to divide area of the wall by area of one tile and that will give us the answer.

Step-by-step explanation:

q1 a person or thing situated away or detached from the main body or system. a cluster is a a mash of many things.

q2 do

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.