Answer:
1275
Step-by-step explanation:
5x = 2x+12 because in similar triangles, the angles are ALWAYS equal
3x=12
x=4
2(4)+12=A
A=20 degrees
The branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances