Answer:
28.8
Step-by-step explanation:
23+2x+3x+13=180 simplify the left side
5x+36=180 subtract 36 from both sides
5x=144 divide both sides by 5 to isolate the variable
x=28.8
Answer:
well bart has 20.00
andy took 19.65
Step-by-step explanation:
subtract 
your answer should be 0.35
Answer:
When heated calcium carbonate forms calcium oxide and carbon dioxide.
Answer:
A
Step-by-step explanation: