# Math

posted by .

7 to the power of - 2
_______________________

7 to the power of - 4

could you show me how you get 49 as the naswer...the long line shows that you need to divide both of them

• Math -

If you see a negative exponent in the numerator, it is the reciprocal of the number without the negative sign in the exponent. Namely:

A-b = 1/Ab
or
1/A-b = Ab

Therefore
7-2 / 7-4
=74 / 72
=?

## Similar Questions

1. ### dividing monomials

i don't know what to do when their is a smaller number on top Give an example and tell us what you don't understand. (-c)2d7/c2d6 d i just don't get it do u have some examples?
2. ### math

find the greatest common factor and simplify your answer. 4v to the 7th power y to the 9th power and 16v to the 6th power x to the 8th power y to the 5th power.
3. ### math

simplify, 4v to the 7th power y to the 9th power and 16v to the 6th power x to the 8th power y to the 5th power.
4. ### math

4v to the 7th power y to the 9th power and 16v to the 6th power x to the 8th power y to the 5th power
5. ### Science math

Can no one help me? I posted a question earlier I don't need answer I need to understand what I did wrong my thinking is that if I have a 2:1 ratio And my total is 99 that if I divide by 3 then I can get the amounts 33x2 is 66, then
6. ### math

1)on the 7th grade honor review exam, student were asked to create a power with a base of 3 that is greater than 9 but less then 3 to the 5th power . two powers that student created show below. Describe why each of the solutions is …
7. ### math

Hence or otherwise calculte the value of 2 to the power 2010 plus 2 to the power 2012 plus 10 divide by 2 to the power 2009 plus 1
8. ### mathematics

[{(3 to power 5by2*5 to power 3by4)/2to power -5by4}/{16/5 to power 1by4*3 to power 1by2)}]to power 1by5
9. ### Math

Which of the following is equivalent to the expression 8 to the -5 power times 8 to the second power A) 1/8 to the 7 power B) 1/8 to the 3 power C) 8 to the 3 power D) 8 to the 7 power I was in between b and c but im pretty sure its …
10. ### Math

According to the Pythagorean theorem, which of the following statements below is true for the triangle in the diagram?

More Similar Questions

Post a New Question