Add the following lengths, each obtained from a different ...

[CBme]

Add the following lengths, each obtained from a different measuring instrument, and round off the answer to the proper number of significant figures: 20.02 m, 5.91 m, 0.0097 m, and 2.467 m.
 
  What will be an ideal response?

Question 2

Many of the extrasolar planets that have been detected directly to date are
 
  A) very large and at great distances from their parent star
  B) small and at great distances from their parent star
  C) small and close to their parent star
  D) very large and close to their parent star

[fatboyy09]

Answer to Question 1

28.41

Answer to Question 2

A

[CBme]

TYSM

[FergA]

Thanks for the timely response, appreciate it