Exercice 2 Soit (Un) la suite définie sur N par U = -3n+4.
1) Calculer U, ;U, et U2.
2) Montrer que (Un) est une suite arithmétique.
n
3) Calculer Sn = U=U, +U, +...+Un en fonction de n.
k=1
4) Déterminer l'entier n pour lequel U = -89.
5) Calculer S=U, +U6 + ... +
U 23
Exercice 3
TTT​

Consider the diagram. which line segment has the same measure as st? rx tx sr xs

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Find the multiplicative inverse of 8-12i