A farmer has chickens, sheep and horses there are 154 animals and 516 total legs the number of sheep equals twice the number of chickens how many of each type of animals does he have

number of chicken = 50

number of sheep = 100

number of horse = 4

Step-by-step explanation:

Let

x = number of chicken

y = number of sheep

z = number of horse

x + y + z = 154 (1)

2x + 4y + 4z = 516 (2)

the number of sheep equals twice the number of chickens

y = 2x

Substitute into the equation

x + y + z = 154

x + 2x + z = 154

3x + z = 154 (3)

2x + 4y + 4z = 516

2x + 4(2x) + 4z = 516

2x + 8x + 4z = 516

10x + 4z = 516 (4)

3x + z = 154 (3)

10x + 4z = 516 (4)

Multiply (3) by 4 to eliminate z

12x + 4z = 616 (5)

10x + 4z = 516 (4)

Subtract (4) from (5)

12x - 10x = 616 - 516

2x = 100

x = 100/2

x = 50

Recall,

y = 2x

y = 2(50)

y = 100

x + y + z = 154

50 + 100 + z = 154

150 + z = 154

z = 154 - 150

z = 4

number of chicken = 50

number of sheep = 100

number of horse = 4

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: