Answer:
When heated calcium carbonate forms calcium oxide and carbon dioxide.
Answer:
-1
Step-by-step explanation:
15.87% of the population does not meet the minimum standards.
We use z-scores to find this probability:
z=(X-μ)/σ = (85-100)/15 = -15/15 = -1
Using a z-table (http://www.-table.com) we see that the area to the left of, less than, this is 0.1587. This is 15.87%.
Answer:
1st one I hope this helped!
Step-by-step explanation:
