Answer:
50 legs
Step-by-step explanation:
We know that a dog has 4 legs, a cat has 4 legs, a giraffe has 4 legs, a duck has 2 legs, and a chicken has 2 legs. So, we want to calculate 
, right?
Wrong! It's a trick question! The chickens aren't on the floor, so they don't count. So, we really want 
.
We multiply it out to get 
.
We add these up to get 
.
So, our answer is 
legs.
To do this problem you would first need to factor out a variable, which in this case I would want to do the first equation because it is isolated. Now the equations would look like this:
x = -2y - 1
4x - 4y = 20
Since we know that x is now equal to -2y - 1 we can plug it in to the x value in the second equation:
4 (-2y -1) - 4y = 20
-8y -4 - 4y
-12y - 4 = 20
-12y = 24
y = -2
Now that we know the y value plug the y value to one equation to find the x, I will be using the first equation
x + 2(-2) = -1
x - 4 = -1
x = 3
Solutions:
y = -2
x = 3
The equation would be x+5*-2=6.
The result of that equation would be x=16
Say you have this problem.
4x=2x-4
First you would combine your like terms.
4x = 2x-4
-2x=-2x-4
---------------
2x=-4
Next you would divide
2x =-4
÷ -4 =-4
--------------
x = 0.5
Answer:
-3/8
Step-by-step explanation:
