One number is four times another number. the sum of their reciprocals is 1/4 . what are the numbers?

The numbers are 5 and 20.

Step-by-step explanation:

To find : What are the numbers?

Solution :

Let the one number be 'x'.

The reciprocal is

The another number be 'y'.

The reciprocal is

One number is four times another number.

i.e. .....(1)

The sum of their reciprocals is .

i.e. ....(2)

Substitute (1) in (2),

One number is 4y=4(5)=20.

Therefore, the numbers are 5 and 20.

me

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.