Bonjour pouvez vous m'expliquer car je n'y arrive pas. merci Lors d’un congrès international, 76 personnalités parlent anglais, ce qui correspond à 80 % des participants. 60 % de l’ensemble des personnes sont des femmes et, parmi elles, 49 parlent anglais.

1. Calculer le nombre de personnes présentes au congrès.

2. Construire un tableau à double entrée donnant la répartition des effectifs.

3. La proportion de personnes parlant anglais est-elle plus importante chez les hommes ou les femmes ?

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Find the solution set of this inequality. select the correct graph. |8x+16|> 16

Which expression is equivalent to 3^3 + 2^2?