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48 1. Exprimer le périmètre P de
ce polygone en fonction de x:
a. sous la forme d'une somme;
b. sous la forme d'un produit.
2. Calculer ce périmètre pour :
• x= 3,5
5.
.x = 2​

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

How would you reduce the volume of gas

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question