10 Pendant les vacances, Lara a augmenté de 30 % la durée de son temps de lecture.
De quel pourcentage devrait-elle diminuer son
temps de lecture au retour des vacances pour retrou-
ver sa durée initiale de lecture ? Arrondir à l'unité.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?