Un minerai fournit 20% de sa masse en fonte.

Quelle quantité de minerai faut-il pour obtenir 1820kg de fonte ?

Merci d'avance

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

The sum of two numbers is 86, and their difference is 20. find the two numbers