What is the value of this expression when w = -5? w2 + 3w − 11

It is either -36 or 14

-51

How? Because:

-5x-5= -25

3 x -5 = -15

-25+-15=-40

-40-11=-51

The angle x is 55 degrees

Step-by-step explanation:

Here to find the unknown, we have to just use the basic definition of the sum of angles in a triangle.We all know that the sum of the angles of a triangle is 180 degrees. Hence consider triangles, one which has 15 degrees angles, x degrees angle and then 25 degrees angle. There are three triangles. Find the other angles in the triangle by constructing a right-angled angle. So, one of the angles would be 90 degrees. When you get that, sum and subtract from 180 in each triangle. Hence, you would get 55 degrees for x.