anonymous
  • anonymous
QUICK MATH PROBLEM!!! (7^2 - 2^3) ÷ 7 =
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Please don't give away answers. First figure out what 7^2 and 2^3 equal, subtract them and divide for 7. Order of operations.
anonymous
  • anonymous
CAN YOU WRITE IT AS A FRACTION OR INTERGER?
anonymous
  • anonymous
anyone?

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anonymous
  • anonymous
Fraction
anonymous
  • anonymous
I need help w a fraction or interger. ;^;
anonymous
  • anonymous
do you know how to change a decimal into a fraction?
anonymous
  • anonymous
I forgot, okay. Can you help me?
anonymous
  • anonymous
please???
anonymous
  • anonymous
Yeah sure
anonymous
  • anonymous
Thank you soo much!!
anonymous
  • anonymous
Ok but sorry if I suck at explaining
anonymous
  • anonymous
It's fine. :)
anonymous
  • anonymous
So what place is the 9 in
anonymous
  • anonymous
the top place right?
DebbieG
  • DebbieG
What do you mean by "CAN YOU WRITE IT AS A FRACTION OR INTERGER?"? The decimal answer that the user above gave you is an approximation. What are you trying to do, exactly? She gave you the fraction, and then use a calculator to approximate the decimal (why, I don't know... I would never approximate an exact answer unless there was a good reason to!!). But if you know convert that approximate decimal BACK into a fraction, it won't be the original answer.
DebbieG
  • DebbieG
oh, now that answer is gone... lol... But I'm still not sure what you're trying to ask.
anonymous
  • anonymous
I'll write out the whole problem, okay. :)
anonymous
  • anonymous
Give me sec.
DebbieG
  • DebbieG
Yes, that's always best. :)
anonymous
  • anonymous
I think they're trying to ask how to turn a decimal into a fraction? but idk
DebbieG
  • DebbieG
I don't think so, not if it's this same problem. No reason even to be talking about decimals. :)
anonymous
  • anonymous
(7^2 -2^3) / 7 = ? Type a integer or a simplified fraction.
anonymous
  • anonymous
That what it says.
DebbieG
  • DebbieG
OK, well, if you get an answer that reduces to an integer, then you have an integer answer. Otherwise, you'll have a fraction.
DebbieG
  • DebbieG
It's just saying to "fully reduce" the fraction. If that turns out to be an integer, then that's what it will be. (Integers are the "whole numbers" and the "negative whole numbers", plus 0, e.g..... .... -3, -2, -1, 0, 1, 2, 3......)
anonymous
  • anonymous
@DebbieG are you good with proofs?
anonymous
  • anonymous
but the answer it like this, 5.857142857142857 ok, so I need to turn it to a fraction simplified right?
anonymous
  • anonymous
proofs?
anonymous
  • anonymous
Haha sorry not related to your question, you'll learn it in geometry
DebbieG
  • DebbieG
So just follow PEMDAS: \((7^2 - 2^3) ÷ 7 \) The P is for Parentheses, so do what's in the ( ) first. And E is for exponents, which come before S for subtraction. So evaluate the exponents, then subtract the result. Then THAT result gets divided by 7, which is really just the same as making it the num'r of a fraction over 7 in the den'r.
anonymous
  • anonymous
Thank you the both of you for trying to help me!!! ^^ and @itsKaylee Oh. You had me going for a second, like 'what is proofs??'
DebbieG
  • DebbieG
NO, let's get one thing straight!! :) You said: "but the answer it like this, 5.857142857142857 ok, so I need to turn it to a fraction simplified right?" What you mean is that you punched this up in a calculator and that's what it gave you. You can never turn that back into a simplified fraction because it is only an APPROXIMATE RESULT. You need to put your calculator ASIDE, this problem does NOT require it so don't reach for it! It's a crutch! :) Just do as I said above and you will end up with a fraction!
DebbieG
  • DebbieG
@itsKaylee it would depend on the subject of the proof, but in geometry, it's kind of doubtful... unless it's pretty basic. :) It's not one of my stronger areas. But just post your question, I can look at it and I'm sure someone here will be able to help you! :)
anonymous
  • anonymous
Okay, I'm going to try it without a calculator now. Give me a sec. No calculator remember.
anonymous
  • anonymous
Ok I'll just tag you in the question
anonymous
  • anonymous
41/7 Help?
DebbieG
  • DebbieG
RIGHT, go for it! :) Remember that a fraction is really just another way to write division, so the problem is really: \[\Large (7^2 - 2^3) ÷ 7=\dfrac{ (7^2 - 2^3) }{ 7 }\] So evaluate that numerator (the top) using the PEMDAS rules, and "put it over" a den'r of 7, THAT'S your fraction. The only other thing is to be sure that it is fully reduced. As long as it is, that's your simplified fraction! :)
DebbieG
  • DebbieG
YES, exactly!! See, you got it! NO calculator, even!! :)
DebbieG
  • DebbieG
And since 41 isn't a multiple of 7, there is nothing to reduce... so that's it, you're done!
anonymous
  • anonymous
OHHHHH!!!! THANK YOU!!! WOW, THANK YOU, OK, I GET NOW, WOW THANNK YOU!
DebbieG
  • DebbieG
You're very welcome, happy to help. :)
anonymous
  • anonymous
Thank you again! :) Bye! @DebbieG

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