16. Un salón cuadrado tiene una superficie de 50 m2 Hemos de embaldosarlo con
losetas cuadradas de 25 cm de lado. ¿Cuántas losetas son necesarias?

n=800 losetas son necesarias

Step-by-step explanation:

S (loseta)=25^2 cm^2=625 cm^2

50m^2=50*(100)^2 cm^2=500,000 cm^2

n=500,000/625

n=800

I am sorry perhaps I have errors in translation... cause I do not speak espagnol

answer: 25.4 units

step-by-step explanation: radius = 12.7 units

diameter = twice the radius

diameter = 12.7 x 2

= 25.4

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: