## A community for students. Sign up today

Here's the question you clicked on:

## anonymous one year ago hat is the value of the expression 3–4?

• This Question is Closed
1. anonymous

what is the value of the expression 3–4?

2. anonymous

@cc_peach @XXKXX

3. anonymous

@triciaal

4. anonymous

1/81 is my answer for this...

5. triciaal

oh you mean 3^-4

6. triciaal

correct

7. anonymous

yaay!! swaggy <3

8. anonymous

yes

9. anonymous

ok how do u do this?

10. triciaal

you can shift the number 6 to get the symbol for exponent

11. anonymous

3^(-4)=1/3^4=1/81

12. anonymous

ok how does that work? like what does it look like

13. Nnesha

exponent rule $\huge\rm x^{-m}=\frac{ 1 }{ x^m }$ when you see negative exponent you should flip the fraction to make it positive exponent

14. anonymous

ok

15. Nnesha

that's how $\huge\rm \frac{ x^{-m} }{ 1 }=\frac{ 1 }{ x^m }$

16. triciaal

|dw:1441124654584:dw|

17. anonymous

ok

18. anonymous

what about somthing like this What is the value of the expression$\frac{ 1 }{ 5-^5}$ ?

19. Nnesha

flip it

20. triciaal

when you subtract exponents you are dividing numbers/variables with the same base. anything to the zero is 1

21. anonymous

then it would look like this $5^-5$

22. anonymous

right?

23. triciaal

|dw:1441124901530:dw|

24. triciaal

with practice you can like @Nnesha said "flip it" AND change the sign

25. Nnesha

when you do that sign would change $\huge\rm x^{\color{reD}{-m}}=\frac{ 1 }{ x^\color{reD}{m} }$ why do we have to flip it ? so we can change negative to positive exponent

26. anonymous

ok what is the answer What is the value of the expression 1/5^5 ?

27. anonymous

4^5?

28. anonymous

31255 mabby

29. Nnesha

it's $\large\rm \frac{ 1 }{ 5^{-5} }$

30. Nnesha

how did you get 4 base ?

31. anonymous

yea

32. anonymous

What is the value of the expression$\frac{ 1 }{ 5-5 }$ ? A. 1/3125 B. 1/25 C. 25 D. 3125

33. anonymous

@cc_peach

34. anonymous

What is the value of the expression 15−5 ? A. 1/3125 B. 1/25 C. 25 D. 3125

35. triciaal

|dw:1441125772459:dw|

36. anonymous

so what is the answer?

37. triciaal

@misty1212

38. Nnesha

$$\color{blue}{\text{Originally Posted by}}$$ @shadybubba What is the value of the expression 15−5 ? A. 1/3125 B. 1/25 C. 25 D. 3125 $$\color{blue}{\text{End of Quote}}$$ 15 to the -5 power or 5 to the -5 power ?

#### Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy