Mathematics
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OpenStudy (anonymous):
Using the ratio of perfect squares method, what is square root of 14 rounded to the nearest hundredth?
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OpenStudy (anonymous):
@amistre64 could you help me?
OpenStudy (anonymous):
@dtan5457
OpenStudy (amistre64):
ive never come across that method ... srry
OpenStudy (anonymous):
oh. its alright.
geerky42 (geerky42):
Well, \(\sqrt{14} = \sqrt{2\cdot7} = \sqrt2\sqrt7\).
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OpenStudy (anonymous):
so i multiply 2 and 7?
geerky42 (geerky42):
multiply \(\sqrt2\) and \(\sqrt7\)
OpenStudy (dumbcow):
i am intrigued... so the goal is to find 2 num a,b such that a^2/b^2 = 14, then sqrt(14) = a/b
geerky42 (geerky42):
Are you familiar with "ratio of perfect squares method?" @dumbcow
OpenStudy (dumbcow):
no im not, im just speculating
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OpenStudy (anonymous):
nupe. not one bit. I was previously in pre-al then i trnsferred school now i am suddenly in Algebra
geerky42 (geerky42):
well from quick looks on google, it seems that you just simplify radical, then calculate from there, I guess.
OpenStudy (anonymous):
i got 14 from 2 and 7
OpenStudy (triciaal):
what is the ratio of perfect squares method? is there another name for it ?
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geerky42 (geerky42):
I said multiply \(\sqrt2\) and \(\sqrt7\)
OpenStudy (anonymous):
i know. i did. i got \[\sqrt{2}\]
OpenStudy (anonymous):
i mean 14
geerky42 (geerky42):
So \(\sqrt2\times\sqrt7 = 14\)?
OpenStudy (anonymous):
well \[\sqrt{14}\]
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geerky42 (geerky42):
well, we are back to where we start.
Just convert \(\sqrt2\) and \(\sqrt7\) into decimal, then multiply them together.
OpenStudy (anonymous):
ok
OpenStudy (dumbcow):
@pikapow , just put sqrt(14) in your calculator then round
you cant factor any perfect squares out of 14
OpenStudy (anonymous):
3.7224
OpenStudy (anonymous):
right?
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geerky42 (geerky42):
If you don't have to show work, there is no point in doing that, so just do what @dumbcow said lol
OpenStudy (anonymous):
was i right though?
geerky42 (geerky42):
Well, I got 3.7416
OpenStudy (anonymous):
me too
OpenStudy (anonymous):
wait. no i didnt
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geerky42 (geerky42):
Okay, so round it to nearest hundredth and you have 3.74
geerky42 (geerky42):
Calculate \(\sqrt{14}\)?
OpenStudy (triciaal):
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