M is the centroid of △DEF. There is a triangle DEF in which J, K, and L are the points on the side DE, side EF, and side DF respectively. Segment DK, segment EL, and segment FJ intersect each other at point M. The length of DM is 8, the length of MJ is 2y, the length of EM is 6, and the length of FM is 2x. What is an expression for FJ? Select all that apply. A. 2x + 2y B. 3x C. 6y D. 3y

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

An equation where variables are used to represent known values—function notation true or false