Solve by substitution. show each step of your work. 5x + y = 15 3x + 2y = 16

Given equations are 5x + y = 15 and 3x + 2y = 16.

Solving first equation in the form y=mx+b,

5x + y = 15

y = -5x + 15

Substituting y= -5x+15 from first equation into second equation :-

3x + 2y = 16

3x + 2·(-5x + 15) = 16

3x - 10x + 30 = 16

-7x + 30 = 16

7x = 30 - 16 = 14

x = 2

Substituting x=2 into first equation :-

5x + y = 15

5(2) + y = 15

10 + y = 15

y = 15 - 10

y = 5

So final answers are x=2, y=5.

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.  

answer: 3.26019516

step-by-step explanation: