Durante la settimana visiteranno il parco 72 bambini. per ogni bambino viene preparata una scatola rettangolare, in cui sistemare quanto verrà raccolto nel corso della visita. ogni scatola è lunga 18cm e larga 12 cm. quanto è lunga la striscia di cartone che serve per realizzare il bordo di tutte le scatole.

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Step-by-step explanation:

The question in English is

During the week 72 children will visit the park. For each child is prepared a rectangular box, in which to arrange what will be collected during the visit. Each box is 18 cm long and 12 cm wide. How long is the strip of cardboard that is used to make the edge of all boxes.

Let

x ----> the length of the box

y -----> the width of the box

we know that

The perimeter of the box is equal to

we have

step 1

Find the perimeter of one box

step 2

Find the perimeter of 72 box

Multiply the perimeter of one box by 72

Convert to meters

Divide by 100

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)