How to write one thousand, one hundred twenty-four and forty nine hundredths in expanded notation

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

That table shows measurements (in invhes$ from cubes with different side lengths. which pairs of variables have a linear relationship? check all that apply