Bar diagrams can<span> be used to represent single-step problems</span>
Answer:
the first one
Step-by-step explanation:
Not to sure if it's right but hope it helps u ;)
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
The answer is 28 in square
Is if you round the 7 to a 10 and do the 12 round it to a 10 10 Times10 is 100