## anonymous one year ago I'LL GIVE YOU MEDAL IF YOU'RE A BATMAN FAN 1. Write the following expression using a single exponent. 85 ÷ 8-2 87 8-7 83 8-10

1. Nnesha

$8^5 \div 8^{-2}$when we divide same base , subtract their exponents $\huge\rm \frac{ x^m }{ x^n }=x^{m-n}$

2. Theloshua

Im a batman fan... Thats my fave superhero ^-^

3. anonymous

ME TOO

4. Theloshua

i shud get a medal just for that :3

5. anonymous

I BEAT ALL OF THE ARKHAM GAMES IN ONE DAY

6. Nnesha

here is an example $\huge\rm 2^{2} \div 2^{-3} = 2^{2-(-3)}=2^{2+3}=2^{5}$

7. Theloshua

Ive watched all the old and new movies and read countless comic books ;)

8. anonymous

ME TOO

9. anonymous

BYE THE WAY I'M A GIRL 13 YR. OLLD

10. anonymous

OHH I GET ITS 7

11. anonymous

HERE'S ANOTHER Which of the following is an equivalent representation of 3-3 ?

12. anonymous

A.1/9 B.1/12 C.1/12 D.1/64

13. Nnesha

well you need to know exponent rules $\huge\rm x^{-m}=\frac{ 1 }{ x^m }$ flip the fraction to change the sign of the exponent

14. anonymous

ummmmmmmmm. is it b.?

15. Nnesha

write these down in ur notebook when we multiply same bases we should add exponents $\huge\rm x^m \times x^n=x^{m+n}$ and when we divide same base , subtract their exponents $\huge\rm \frac{ x^m }{ x^n }=x^{m-n}$

16. Nnesha
17. anonymous

a.?

18. Nnesha

why A ??? :=)

19. anonymous

wait wait!!!!! C.?

20. Nnesha

haha why C ?

21. Nnesha

guess what guessing isn't a good option right ?

22. Nnesha

$\huge\rm 3^{-3}$ is this ur question right ?

23. anonymous

YEAH

24. Nnesha

okay so how would you convert it to positive exponent $3^{-3} = ????$

25. Nnesha

$$\color{blue}{\text{Originally Posted by}}$$ @Nnesha $\huge\rm x^{-m}=\frac{ 1 }{ x^m }$ flip the fraction to change the sign of the exponent $$\color{blue}{\text{End of Quote}}$$ remember the exponent rule ?

26. anonymous

YOU WANNA KNOW SOMETHING FUNNY? IT WAS C.

27. anonymous

I'M LAUGHING OUT LOUD

28. Nnesha

well ur answer choices isn't correct.

29. Future_Einstein

Batman. and my little pony!!!!!

30. Future_Einstein

@TwilightSparkle2015

31. Nnesha

$$\color{blue}{\text{Originally Posted by}}$$ @TwilightSparkle2015 A.1/9 B.1/12 C.1/12 D.1/64 $$\color{blue}{\text{End of Quote}}$$ see B and C are the same :/

32. anonymous

33. Nnesha

good. so 3^{-3} = ?

34. anonymous

SORRY I GOT TO GO TO CLASS NOW. THANK YOU GUYS FOR HELPING ME TODAY

35. Nnesha

okay. have a nice day.