Which of these strategies would eliminate a variable in the system of equations? 2x+3y=-5 2x-3y=10 Choose all answers that apply: A) add the equations. B) subtract the bottom equation from the top equation C) multiply the top equation by 2, then add the equations Any help will be appreciated :)

A. Add the equations.

B. Subtract the bottom equation from the top equation

Step-by-step explanation:

72 is the answer to this problem

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.