Answer: 19
Step-by-step explanation:
The angles are supplementary, so

6 700 020 would be the standard form.
Sixteen pieces.
Two fifths of 40 is simply two fifths times 40, which can be written as follows: Two/fifths x 40 you can convert "two" to "2" and "fifths" to "5" and then the equation and answer is:
2/5 x 40 = 16.00, more simply put, sixteen.