Solve the system. (x +y – 3z = -20 —3y + 2z = 5 Z = 4 Enter your answer as an ordered triple. ([?],[ ][ ] Enter ​

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog