Re-write the following sets in explicit form and determine the cardinality of each set.
a) u = {x: x is a positive counting number less 25}
b) P = {x: x is a multiple of 3 less than 18
c) Q = x: x is an even number between 5 and 21
d) R - {x: 3<x<12}
e) (P UQ) O (QUR)

x = 25

step-by-step explanation:

a^2+b^2=c^2

7^2+24^2=c^2

49+576=625

sqrt625=25

x=25

the answer is d

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.  

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.