## anonymous one year ago HELP with Scienific notation quiz! WILL GIVE MEDAL! What is the quotient written in scientific notation?

1. anonymous

|dw:1439908580061:dw|

2. anonymous

@butterflydreamer

3. butterflydreamer

okaayy... Firstly, let's break this down into parts :) Note that : |dw:1439908922717:dw|

4. butterflydreamer

what does 3/4 equal to as a decimal?

5. anonymous

0.75

6. butterflydreamer

great! So we now know this: |dw:1439909078119:dw| Now, what would 0. 75 equal to in scientific notation?

7. anonymous

Sorry, I dunno :/

8. butterflydreamer

do you know what scientific notation is?...

9. anonymous

not really, my teacher just gave me all this stuff i know nothing about

10. butterflydreamer

okaayy.... xD Err, maybe you should try to understand how scientific notation works: https://www.mathsisfun.com/numbers/scientific-notation.html But basically you want to re-write 0.75 with the decimal after the first digit which would be 7 in our case right? So we want 7.5 TIMES 10 to a power. 0.75 = 7.5 x 10^-1 Following??

11. anonymous

mhm

12. butterflydreamer

|dw:1439909465669:dw| |dw:1439909508652:dw| Now you have to use your exponent laws. |dw:1439909579654:dw|

13. butterflydreamer

Therefore, if we use the exponent rules in the box, we will get: |dw:1439909682894:dw| What does -1 + 20 - 5 = ?

14. anonymous

14?

15. butterflydreamer

goood! And we're done! TA DAAA~|dw:1439909773035:dw|

16. anonymous

thx, :D but can i send you some of my other question to see if i got the right answer?

17. butterflydreamer

you're welcomeee! Hmm.. how many questions? I'm about to head off to bed so xD..

18. anonymous

only 3

19. butterflydreamer

okay.

20. anonymous

21. anonymous

22. anonymous

those are all

23. butterflydreamer

question 1. correct question 2. correct question 3. incorrect. btw, you're pictures aren't in order... :)

24. butterflydreamer

*your

25. anonymous

i know, i screen shot them and uploaded in the wrong order ;P what's wrong with 3??

26. butterflydreamer

See how they are both 10^20? This means you just add the 3.7 and 4.45 part ... So like.. say x = 10^20 We have 3.7x + 4.45x = 8.15x if that makes sense?

27. butterflydreamer

|dw:1439910742297:dw|

28. anonymous

oh ok

29. anonymous

thanks alot dude :D

30. butterflydreamer

no woorries ! Anyways, night

31. anonymous

good night