Respuesta :
Since the dog weigh 3 times as much as the cat you divide 28 by four so the cat weighs seven pounds and the dog weighs 21 pounds
Lia's dog weight is 21 pounds, and the cat weight is 7 pounds if the together the pets weight is 28 pounds and dog weights is 3 times of cat weight.
What is a linear equation?
It is defined as the relation between two variables if we plot the graph of the linear equation we will get a straight line.
If in the linear equation one variable is present then the equation is known as the linear equation in one variable.
Let's suppose the dog's weight is x pounds and the cat's weight is y pounds.
So we have:
x + y = 28 and
x = 3y
Solving these two linear equations to get the value of x and y
Putting x = 3y in the first equation, we get:
3y + y = 28
4y = 28
y = 7 pounds (divide by 4 on both sides)
Now putting y = 7 in first equation again, we get:
x + 7 = 28
x = 21 pounds (subtracting by 7 on both sides)
Thus, the dog's weight is 21 pounds, and the cat's weight is 7 pounds.
Learn more about the linear equation here:
brainly.com/question/11897796
