Question

part b true - false
classify each of these statements as always true, at; sometimes true, st; or never true, n
st 11. scientific notation is used to express large numbers in convenient form
at 12. significant figures include all the digits that can be known accurately estimated.
nt 13. an answer to calculations done with scientific measurements cannot precise measurement.

Explanation:

Step1: Analyze statement 11

Scientific notation can express both large and small numbers. So it's sometimes true that it's used for large numbers only.

Step2: Analyze statement 12

By definition, significant figures include all certain digits plus one estimated digit. So it's always true.

Step3: Analyze statement 13

Answer:

s from scientific - measurement calculations can be precise. So the statement is never true.