Chloé, Émilie et Jordan jouent aux billes. Émilie a 7 billes de plus que le double des billes de Chloé, et Jordan a 15 billes de moins que le triple des billes de Chloé.
Sachant qu'Émilie et Jordan ont le même nombre de billes, combien chacun en a-t-il ?

Ineed with number 6 , explain how to get 1978

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103

Agarden consists of an apple tree, a pear tree, cauliflowers, and heads of cabbage. there are 40 vegetables in the garden. 24 of them are cauliflowers. what is the ratio of the number of cauliflowers to the number of heads of cabbage?