25°
y
30°
X = [ ? 1°
Enter

X=125 degrees

Step-by-step explanation:

Subtract the degrees that you know, so 25 and 30, from 180, since all triangles add up to that.

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.