Answer: 9.70%
Step-by-step explanation:
The formula to find the percentage error is given by :-
Given : Actual mass of zinc oxide used by pharmacist = 28.35 g
Estimated mass of zinc oxide used by pharmacist =31.1 g
Now,
i.e.
i.e.
Hence, the percentage of error on the basis of the desired quantity.= 9.70%
100-10=90
90÷2=45
Mr Bergen's age=45+10
=55 years old
Mrs Bergen's age=45 years old
Answer:
slope= 0
Step-by-step explanation:
it's a horizontal line