determine the value of x for which r ∥ s if?

m∠1 = 60 – 2x; and
m∠2 = 70 – 4x.

10

5

50

4

Step-by-step explanation:

m∠1 = m∠2            {r ║s , so, corresponding angles are equal}

60 – 2x  =  70 – 4x

  4x - 2x = 70 -60

         2x = 10

           x = 10/2

           x = 5

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.