1
Choose all the variable terms in the expression. 12+15x-16-4x-10x

X (all of them)

Step-by-step explanation:

X is a variable and the numbers and constants, numbers that do not change. (There isn't much of an explanation for this) (Variables are usually just letters, or unknown amounts)

78.59 is the mean

step-by-step explanation:

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

step-by-step explanation:

formula

x = x1 + p/w(x2 - x1)

let the line segment ab with a(x1,y1) and b(x2,y2)

a point(x,y) divide ab in the ratio, 2: 3 the x coordinate can be written as

x = x1 + p/w(x2 - x1)

here p=2 and w = 2+3

therefore,

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

similarly y coordinate y = y1 + 2/5(y2 - y1)