Michael has a summer job as a bricklayer’s assistant. He is responsible for mixing the concrete. concrete is made of cement, sand, and gravel in a ratio of 1:3:4 by mass. michael needs to make 80 kg of concrete.

The graph isn’t that clear

Ifound this on google “a skewed (non-symmetric) distribution is a distribution in which there is no such mirror-imaging. a "skewed right" distribution is one in which the tail is on the right side. a "skewed left" distribution is one in which the tail is on the left side. the above histogram is for a distribution that is skewed right.” i hope this you for what your looking for

Delta airlines or untied airlines

12+3b -1=-5-b -12-1+5=-b-3b -8=-4b