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Pavel [41]
3 years ago
5

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.
Mathematics
1 answer:
Mnenie [13.5K]3 years ago
5 0

Answer:

4,320\ cm  or  43.2\ m

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

P=2(x+y)

we have

x=18\ cm

y=12\ cm

step 1

Find the perimeter of one box

P=2(18+12)

P=60\ cm

step 2

Find the perimeter of 72 box

Multiply the perimeter of one box by 72

P=(72)60=4,320\ cm

Convert to meters

Divide by 100

4,320/100=43.2\ m

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A 4 metre ladder is placed against a vertical wall.
Black_prince [1.1K]

Answer:

Original position: base is 1.5 meters away from the wall and the vertical distance from the top end to the ground let it be y and length of the ladder be L.

Step-by-step explanation:

By pythagorean theorem, L^2=y^2+(1.5)^2=y^2+2.25 Eq1.

Final position: base is 2 meters away, and the vertical distance from top end to the ground is y - 0.25 because it falls down the wall 0.25 meters and length of the ladder is also L.

By pythagorean theorem, L^2=(y -0.25)^2+(2)^2=y^2–0.5y+ 0.0625+4=y^2–0.5y+4.0625 Eq 2.

Equating both Eq 1 and Eq 2: y^2+2.25=y^2–0.5y+4.0625

y^2-y^2+0.5y+2.25–4.0625=0

0.5y- 1.8125=0

0.5y=1.8125

y=1.8125/0.5= 3.625

Using Eq 1: L^2=(3.625)^2+2.25=15.390625, L=(15.390625)^1/2= 3.92 meters length of ladder

Using Eq 2: L^2=(3.625)^2–0.5(3.625)+4.0625

L^2=13.140625–0.90625+4.0615=15.390625

L= (15.390625)^1/2= 3.92 meters length of ladder

<em>hope it helps...</em>

<em>correct me if I'm wrong...</em>

4 0
3 years ago
Compute a value for t that satisfies the equation below. "-2/3" t - 2 = - 3
Dima020 [189]

Answer:

t = 3/2

Step-by-step explanation:

Instead of randomly guessing values of "t" that will satisfy the equation, you can easily find the correct value by solving the equation in terms of "t". In other words, you can set the equation equal to "t" to find the final answer.

(-2/3)t - 2 = -3                             <----- Original equation

(-2/3)t = -1                                   <----- Add 2 to both sides

t = 3/2                                        <----- Divide both sides by -2/3

You can check this value by plugging it into "t" and determining whether both sides of the equations will be equal.

(-2/3)t - 2 = -3                            <----- Original equation

(-2/3)(3/2) - 2 = -3                      <----- Plug 3/2 into "t"

-6/6 - 2 = -3                               <----- Multiply -2/3 and 3/2

-1 - 2 = -3                                    <----- Simplify -6/6

-3 = -3                                        <----- Subtract

6 0
2 years ago
Round<br> 38.86 to 1 decimal place
Sonbull [250]
38.9 is the answer. because it is rounded to the nearest tenth.
5 0
3 years ago
Read 2 more answers
Vermont produces about 430000 gallons of maple syrup each year how many 2 quart containers of Maple Syrup can be made from 43000
Yuki888 [10]
860000 2 quart containers of syrup can be made. Good luck on your schoolwork!
5 0
3 years ago
Read 2 more answers
If the simple interest on ​$4000 for 3 years is ​$720​, then what is the interest​ rate?
solong [7]

Answer:

0.06% annually

Step-by-step explanation:

Divide $720 by 3. We get $240, so we know this is the amount of interest we get per year. Dividing $240 by $4,000 gives us

\frac{240}{4000} = 0.06

4 0
2 years ago
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