Need help with SI units, scientific notation if appropriate

Science
Tutor: None Selected Time limit: 1 Day

Answer the following in the proper SI units, scientific notation if appropriate. Assume exactly 365 days per year. 

1.) 124.1 g  +35 mg=?

2.)  23m^2 + 345.7 ha=? 

3.) 6.6079 x 10^15 cm^3 / 6km^2 

Additional question: for these questions... how do we know what unit to convert to? I.e., in question 1 there is mg and grams? does it matter which unit to convert to or can we do either? 

Oct 22nd, 2015

Thank you for the opportunity to help you with your question!

1. 124.1 g + 35 mg ...convert both to grams

1 gram =1000 mg

?=35mg...............=0.035g

124.1 + 0.035=124.135g

2. 23m^2 + 345.7ha.....convert  m^2 to ha

 1 m^2 = 0.0001 ha

     23m^2            ?.....................=0.0023 ha

0.0023ha+ 0.035g= 0.0373 ha

3. .............in a mkinute please!...time run out but will follow asap!

Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 22nd, 2015

3.  6.6079 x 10^15 cm^3 / 6km^2...unfortunately, you cannot compare Km^2 with Cm^3. one of for length whereas the other is for volume!

Oct 22nd, 2015

To your last question, we can begin from any point when deciding what to convert to what! but to avoid handling huge figures, it's advisable to consider the part which will reduce the figure, thus, convert smaller units to larger units.

Oct 22nd, 2015

What would scientific notation in consideration with significant digits be for 1 and 2? 

Oct 23rd, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Oct 22nd, 2015
...
Oct 22nd, 2015
Dec 10th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer