Algebra Pre-Algebra and Basic Algebra Math Forum

May 21st, 2019, 08:45 PM   #11
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Quote:
 Originally Posted by skipjack That requirement is unclear. It doesn't tell you to round your answer or to truncate your answer. What exactly does "accurate to 1 d.p." mean?
We would be rounding. I'm assuming. May 21st, 2019, 09:04 PM   #12
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Quote:
 Originally Posted by helpmeddddd why am I finding the length of r as I already know it?
Although in the specific case of $r^{2}= p^{2} + q^{2}$ you get $r$, what about:

$\displaystyle p^{2} = r^{2} - q^{2}$

or

$\displaystyle q^{2} = r^{2} - p^{2}$

Both of which are derived from the original equation.

Think of equations less as the value of one variable, but more as information for all of them.

Last edited by skipjack; May 22nd, 2019 at 01:11 AM. May 22nd, 2019, 12:33 PM   #13
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Quote:
 Originally Posted by Greens Although in the specific case of $r^{2}= p^{2} + q^{2}$ you get $r$, what about: $\displaystyle p^{2} = r^{2} - q^{2}$ orn for all of them.
Using this I get $\displaystyle p^{2}=11.4^{2}-9.3^{2}$

$11.4^{2}$ = 129.96 -86.49=43.47 the sqaure root of 43.47 is 6.59317829275

so I'd guess you round it to p=6.6 Tags algebra, problem, word Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Threads Thread Thread Starter Forum Replies Last Post Brian Leon Algebra 4 April 4th, 2017 09:02 AM Doc Algebra 5 October 9th, 2013 02:14 PM apparentlynothing Algebra 4 January 21st, 2013 07:14 PM Hansmatta Algebra 1 October 28th, 2011 02:28 AM mvanant123 Algebra 3 November 5th, 2008 12:23 PM

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