newwar
  • newwar
What is the value of the expression 7–3? A. –21 B. Negative Exponents C. Negative Exponents D. 343
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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newwar
  • newwar
1 Attachment
anonymous
  • anonymous
|dw:1441903391506:dw|do you know this?
anonymous
  • anonymous
you there?

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newwar
  • newwar
yes what do i do
newwar
  • newwar
hello
newwar
  • newwar
@imammalik_806
newwar
  • newwar
@itbribro
anonymous
  • anonymous
rekt m8
anonymous
  • anonymous
7 minus 3?
newwar
  • newwar
4
anonymous
  • anonymous
k hold on lemme see
anonymous
  • anonymous
oh bro
anonymous
  • anonymous
its not 7 minus 3
anonymous
  • anonymous
the 3 is an exponent
newwar
  • newwar
ok
newwar
  • newwar
so what do i do
anonymous
  • anonymous
|dw:1441904338660:dw|see the pattern?
newwar
  • newwar
yes
anonymous
  • anonymous
so we want to go the other direction for negative exponents. to do this we have to do the inverse operation of multiplication. do you know what the inverse operation of multiplication is?
newwar
  • newwar
no
anonymous
  • anonymous
well, technically, we multiply by the reciprocal... but ususally people just call it division.
anonymous
  • anonymous
|dw:1441904557762:dw|
newwar
  • newwar
ok
anonymous
  • anonymous
so if we are at \(7^3\) and we want to get to \(7^2\), we divide by 7 or multiply by 1/7... okay?
anonymous
  • anonymous
do you follow that?
newwar
  • newwar
ok
anonymous
  • anonymous
so let's take it a step further... let's figure out what \(7^0\) should be , using the pattern...
newwar
  • newwar
k
anonymous
  • anonymous
|dw:1441904754195:dw|
anonymous
  • anonymous
can you figure out what \(7^0\) is?
newwar
  • newwar
0
anonymous
  • anonymous
no... let's follow the pattern. what is the number above \(7^0\)?
anonymous
  • anonymous
you there?
newwar
  • newwar
yup
anonymous
  • anonymous
so what is the number above \(7^0\)
anonymous
  • anonymous
|dw:1441904990185:dw|
newwar
  • newwar
7
newwar
  • newwar
1/343
anonymous
  • anonymous
very good!!! now we use the pattern. to go down (negative direction) we divide by 7. what is 7 divided by 7?
anonymous
  • anonymous
it's the same as 7 times (1/7)...
newwar
  • newwar
-1
anonymous
  • anonymous
7 divided by 7 is -1 ??? i don't think so, try again
newwar
  • newwar
just 1 sorry
anonymous
  • anonymous
excellent!!!
anonymous
  • anonymous
|dw:1441905368853:dw|so can you figure out the next number? again, follow the pattern...
newwar
  • newwar
7 by one
anonymous
  • anonymous
? if you can use an expression or the the number
newwar
  • newwar
ok
anonymous
  • anonymous
so what is it... i don't understand what number "7 by one" represents.
anonymous
  • anonymous
don't be afraid... take your time and think, use the pattern and then respond. it's okay to make a mistake because i will help you to learn from it
newwar
  • newwar
sorry my computer went out
anonymous
  • anonymous
that's alright... what did you get?
newwar
  • newwar
i thihnk it is c
anonymous
  • anonymous
\(7^{-1}=\text{c?}\)
anonymous
  • anonymous
just so you know... my goal here is to help you understand these types of problems. it is not to just help you get the answer for this problem.

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