A rectangular price tag has a perimeter of 28 centimeters. Its area is 40 square centimeters. What are the dimensions of the price tag?

10 x 4

Step-by-step explanation:

what factors are there for 40?

1, 2, 5, 8, 10, 20, 40

A rectangle has 2 equal long sides and 2 equal short sides. The area is the short times the long.

10 plus 10 and 4 plus 4 equals 28. 4 x 10 equals 40.

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

you would need to know all the numbers that are on there

step-by-step explanation: