Can someone help me with these two questions?

(- 2, - 4 ) and (3, 10 )

Step-by-step explanation:

(2)

Given the 2 equations

4x - 7y = 20 → (1)

x - 3y = 10 → (2)

Rearrange (2) expressing x in terms of y, that is

x = 10 + 3y → (3)

Substitute x = 10 + 3y into (1)

4(10 + 3y) - 7y = 20 ← distribute and simplify left side

40 + 12y - 7y = 20

40 + 5y = 20 ( subtract 40 from both sides )

5y = - 20 ( divide both sides by 5 )

y = - 4

Substitute y = - 4 into (3) for corresponding value of x

x = 10 + 3(- 4) = 10 - 12 = - 2

Solution is (- 2, - 4 )

(3)

3x + y = 19 → (1)

4x - y = 2 → (2)

Adding the 2 equations term by term will eliminate the y- term

(4x + 3x) + (- y + y) = 19 + 2, that is

7x = 21 ( divide both sides by 7 )

x = 3

Substitute x = 3 into either of the 2 equations and solve for y

Substituting into (1)

3(3) + y = 19

9 + y = 19 ( subtract 9 from both sides )

y = 10

Solution is (3, 10 )

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

the population of other specie of birds will decline or other specie of birds will find some alternate source of food to survive.

explanation:

according to the competitive exclusion principle, which is also known as gause's law, two specie living in the same niche and feeding on the same resource cannot co-exist stably.

as we have well studied the theory of natural selection which states that only those organisms survive which have better tendency to compete for food and adapt to the environmental conditions.

coming towards the question, what wi ll happen when one species outcompetes the other for the small fish , the other specie will not get enough food and will start to die or decline in population. eventually either other specie needs to find another alternative food source for itself or migrate at some other location where there is less competition otherwise it will just not exist anymore at that niche.

hope it !