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Magic Potion

Magic PotionThe Romans stole the recipe of the magic potion to the Gallic one, but the druid wrote the ingredients in mole.  Help the Romans to convert the data :

– Give the molar masses of the water of the glucose and the sodium hydroxide

–  Give the mass to be taken of the water, the glucose and the sodium hydroxide , then the capacity of water.

Posted in Group5.


Response to Geomatic exercise

We are sorry, but it is very unclear what you want us to do.
This is how far we got .

sacre-bleu

please paste in the correct answer.

Posted in Group5.


The road to Rome

fr_img052
Moving from one box to the following:
* By multiplying by 2 if you move to the right;

* Add 1 if you move down.
It can go either up or left. We go of Paris with 1 and runs through all possible paths from Paris to Rome.
What is the sum of all numbers obtained in Rome?

Posted in Group10.


Bonus : Two Enigmes

Bonus : 
We have some enigmes for you :
I) We know that :
2a + b = 2c + a = 2b + 2c = 3b + a = 10
Find the values of every letters.
II) And do you know how many squares can we found on a chessboard of 1999x1999 boxes ?

Posted in Group2.


mathematics problem number 2

Joe, John and Jack would like to build three farms in a rectangle . John already paid  his part of ground; he has the half of it; but Jack and Joe had a quarrel; they didn’t arrive to agreed to share the rest in 2 parties!

Knowing that the lenght of the rectangle is 5, and the breath is 3; and knowing that John has the half of the rectangle such that the rectangle is cut by a diagonal, look for with a mathematical software which values can be right to have the same part between Joe and Jack.

exo-euro1

Posted in Group4.


Hey guys, try this exercise 🙂
 It´s a trigonometry exercise. (Use sin/cos/tan and the relations)

 

An airplane flying horizontal 1 km above the ground and going away from the observer is observed at an elevation of 25° at a certain instant. After 20 seconds, it elevations from the same point, changes with 30°. Then find the distance traveled by the airplane in 20 second.

airplane-opgave1

Posted in Group7.


Math Assigments for French

 People

 

 

a)      Calculate the area of the Bermuda triangle

 

 There is a linear link between time and the amount of ships which have sunk into the deep blue sea, of the Bermuda Triangle.

 

b)      Find the linear link between the years and the ships.

 

Years

1825

1850

1875

1900

1925

1950

1975

Numbers of sunken ships.

203

189

165

142

132

115

98

 

 

32o

26o

 

27 km

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Real excitement, unreal assignments.

Posted in Uncategorized.


airlplane-opgave Hey guys, try this. It´s trigonometry exercise. (use sin/cos/tan and the relations)

 

An airplane flying horizontal 1 km above the ground and going away from the observer is observed at an elevation of 25° at a certain instant. After 20 seconds, it elevations  from the same point, changes with 30°. Then find the distance traveled by the airplane in 20 second.

 

 

Posted in Group1.


The party

Sophie organize a party. She makes some drinks. In a big container, she put 1,25 L of syrup. She had adds 6L of water. Just before the start she realizes that it will be insufficient. She adds 2,5 other liters of water.

What’s the syrup concentration (in g/L) at the end ?

For this exercise we will say that a liter of syrup has the same masse as a liter of water.

Good luck

Posted in Group3.


We have a problem

We think, that they miss some informations. We give you your figure with details (in red) we think they miss:

drivhus1

Posted in Group4.