An expression is shown. 12.39 - (2.5 ⦁ 3.9). What is the value of the expression?

11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

Can someone tell me if this is perpendicular? !