Erica is given the diagram below and asked to prove that AB || DF. What would be the missing step of the proof?
Given: Point B is the midpoint of EF, and point A is the midpoint of ED.
Prove: AB || DF

A- reflective property of equality

B- definition of the slope of a line

C- definition of parallel lines

D- definition of a midpoint

8

step-by-step explanation:

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.