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Emily778
 one year ago
Find the length of the missing side.
Emily778
 one year ago
Find the length of the missing side.

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Emily778
 one year ago
Best ResponseYou've already chosen the best response.0@FutureMathProfessor Please help! Given reward if so!

FutureMathProfessor
 one year ago
Best ResponseYou've already chosen the best response.0dw:1370548165122:dw

FutureMathProfessor
 one year ago
Best ResponseYou've already chosen the best response.0dw:1370548310040:dw

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2oh my goodness. lol.

mitodoteira
 one year ago
Best ResponseYou've already chosen the best response.2\[a ^{2}+b ^{2}=c ^{2}\] \[8 ^{2}+15 ^{2}=x ^{2}\] \[64+225=x ^{2}\] \[x ^{2}=289\] \[x=\sqrt{289}\] \[x=17\]

Emily778
 one year ago
Best ResponseYou've already chosen the best response.0@mitodoteira Can you please help with one more?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Aww that's not being a good sport.

arafatx
 one year ago
Best ResponseYou've already chosen the best response.0The question didn't ask for x, should be 17^2 or 289

mitodoteira
 one year ago
Best ResponseYou've already chosen the best response.2Emily, what is the other question?

Emily778
 one year ago
Best ResponseYou've already chosen the best response.0In triangle ABC, <A is a right angle and m<B= 45 degrees. Find BC. If your answer is not and integer, leave in simplest form. @mitodoteira

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2the length of the missing side would be what @arafatx mentioned. You can always plug it back in to the pythagorean identity to check your answer. a^2 +b^2 = c^2 (15)^2 + (8)^2 = (sqrt (289))^2 225 + 64 = 289

Emily778
 one year ago
Best ResponseYou've already chosen the best response.0is that for the second one?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2and for that question,you have a 454590 triangle, therefore your proportions are 1:1:1*sqrt(2) By that i mean both of your base legs are the same and to find the hypotenuse you're going to multiply your base leg * sqrt(2)

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2b1 = 12, b2 = 12, hypotenuse = b1*sqrt(2)

mitodoteira
 one year ago
Best ResponseYou've already chosen the best response.2Since <B is 45º and and <A is 90º, <C is (180(90+45)=45) 45º. Thus, the triangle is isosceles. \[a ^{2}+b ^{2}=c ^{2}\] \[12 ^{2}+12 ^{2}=x ^{2}\] \[2•144=x ^{2}\] \[x ^{2}=288\] \[x=\sqrt{288}\] \[x=12\sqrt{2}\] \[x \approx 16.97056 \approx 17\]

Emily778
 one year ago
Best ResponseYou've already chosen the best response.0you guys are giving me 2 different answers. Which is it?

mitodoteira
 one year ago
Best ResponseYou've already chosen the best response.212*sqrt(2) is about equal to 17

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2@mitodoteira c^2 = a^2 + b^2 take x = 17, c=x (17)^2 = (12)^2 + (12)^2 289 = 288 nope.

mitodoteira
 one year ago
Best ResponseYou've already chosen the best response.2That's because I'm rounding. The actual answer is irrational. If you look at my answer, I gave the answer to a few decimal places as well.

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2whereas we take c = 12sqrt(2) c^2= a^2 + b^2 (12sqrt(2))^2 = (12)^2 + (12)^2 288 = 288 You DO NOT round when finding lengths.

mitodoteira
 one year ago
Best ResponseYou've already chosen the best response.2I gave the true answer, as well as the rounded one in case she needed it for something (I was often asked to give the answer to n decimal places instead of the exact answer).

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2the "true" answer is 12* sqrt(2) according to the 454590 degree triangle.

mitodoteira
 one year ago
Best ResponseYou've already chosen the best response.2Yes, it is. I don't see what the problem is.

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Emily778 You've already chosen the best response. 0 In triangle ABC, <A is a right angle and m<B= 45 degrees. Find BC. If your answer is not and integer, leave in simplest form.

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2"if the answer is not an integer, leave it in simplest form" and therefore the simplest form is 12*sqrt(2)

mitodoteira
 one year ago
Best ResponseYou've already chosen the best response.2What I said was 'x=12*sqrt(2), x APPROXIMATELY EQUALS 16.97056 approx 17' I am new to this community. Most others I have been to welcome extra information.

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2the approximation then would be longer than 16.97056. you'd have to include the whole number approximation, not rounding up to 17.

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1If it's suppose to be in exact or simplified form then leave it as radicals, fractions etc. If it asks for estimation, nearest number, or approximation then that's when you round up and change the radical to a number

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1so your final answer for the second problem should be left as a radical.

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.0yeah, simplest form = \(12\sqrt{2}\)
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