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Math help
Posted by: bazookaman
Date: May 21, 2019 05:21AM

Re: Math help
Posted by: PeterW
Date: May 21, 2019 05:56AM

Re: Math help
Posted by: TheCaber
Date: May 21, 2019 06:02AM

Re: Math help
Posted by: bazookaman
Date: May 21, 2019 06:05AM

Re: Math help
Posted by: spacetime
Date: May 21, 2019 06:16AM

Re: Math help
Posted by: DP
Date: May 21, 2019 06:41AM

Re: Math help
Posted by: bazookaman
Date: May 21, 2019 07:06AM

Quote
spacetime
Nonesense
196  4 + 16
there is no parenthesis, so you do it left to right
You got the difficult parts right (parenthesis and exponential) and stumble upon this easy part?
Re: Math help
Posted by: spacetime
Date: May 21, 2019 08:07AM

Re: Math help
Posted by: Golfer
Date: May 21, 2019 08:28AM

Re: Math help
Posted by: JoeH
Date: May 21, 2019 08:30AM

Quote
bazookaman
The first time I did it, I also got 208. But then my daughter starting telling me about how that didn’t follow the order of operations. So you’d add before you subtracted. And that’s what started me down this path.
Re: Math help
Posted by: rz
Date: May 21, 2019 08:32AM

Re: Math help
Posted by: bazookaman
Date: May 21, 2019 09:05AM

Re: Math help
Posted by: ztirffritz
Date: May 21, 2019 10:26AM

Re: Math help
Posted by: Carm
Date: May 21, 2019 10:32AM

Re: Math help
Posted by: neophyte
Date: May 21, 2019 10:50AM

Quote
DP
14^2  (53)^2 + (62)^2
Math is all Greek to me. When did this symbol, "^", come to mean squaring? Why not just write "14 x 14"?
God, I hate math. Wasn't there a post along the same lines a while back? It was the process to solve the problem that was problem (get it?).
Re: Math help
Posted by: Robert M
Date: May 21, 2019 11:01AM

Re: Math help
Posted by: Paul F.
Date: May 21, 2019 11:13AM

Re: Math help
Posted by: JoeH
Date: May 21, 2019 11:39AM

Quote
neophyte
Quote
DP
14^2  (53)^2 + (62)^2
Math is all Greek to me. When did this symbol, "^", come to mean squaring? Why not just write "14 x 14"?
God, I hate math. Wasn't there a post along the same lines a while back? It was the process to solve the problem that was problem (get it?).
The "^" means the number following this symbol is an exponent. Thus ^2 means squared, ^3 means cubed, etc.
Re: Math help
Posted by: Buzz
Date: May 21, 2019 02:38PM

Re: Math help
Posted by: spacetime
Date: May 21, 2019 04:27PM

Re: Math help
Posted by: DP
Date: May 21, 2019 04:59PM

Quote
spacetime
now try this
14_{8}^{2}(53)^{2}+(62)^{2}
Re: Math help
Posted by: graylocks
Date: May 21, 2019 11:51PM

Re: Math help
Posted by: TheCaber
Date: May 22, 2019 08:11AM

Quote
spacetime
now try this
14_{8}^{2}(53)^{2}+(62)^{2}
Re: Math help
Posted by: btfc
Date: May 22, 2019 09:21AM

Re: Math help
Posted by: spacetime
Date: May 22, 2019 07:11PM

Quote
TheCaber
Quote
spacetime
now try this
14_{8}^{2}(53)^{2}+(62)^{2}
Well, numeric base conversion from octal to decimal should be done before anything else. So, 14_{8} = 12_{10} is 12. And, we have:
= 12^{2}(53)^{2}+(62)^{2}
= 12^{2}(2^{2})+(4^{2})
= 144  4 + 16
= 156
Done.
You could choose to evaluate 14_{8}^{2} in base eight (octal) and convert the result:
14_{8}^{2}
= 220_{8}
= 200_{8} + 20_{8}
= 128_{10} + 16_{10}
= 144_{10}
= 144
But, that's a lot more effort for the same result.
Have a great day!