Plz help:(:(:(:(:

It’s 21 and 22...thxxx u

29.7 for question 14

15a is 12.1

15b is 14

Step-by-step explanation:

In a 45 45 90 triangle, the legs are congruent, or the same length.

If we call the legs a, then the hypotenuse would be root 2 a.

So if the hypotenuse is 42, we divide by root 2 to get the length of each leg.

That should give us 29.7

In a 30, 60, 90 triangle, the short side is a, then the hypotenuse is 2a, and the longer side is a root 3.

So if the shorter side is 7, the longer side is 12.1, and the hypotenuse is 14.

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.