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Mathematics 15 Online
OpenStudy (anonymous):

i need help i just want to make sure that i got ever question right. Please help me

OpenStudy (klimenkov):

What is the problem?

OpenStudy (anonymous):

For a triangle with sides a = 418 and b = 222, side c must be less than what length? Type the numeric answer only in the box below. Numerical Answers Expected! answer=640

OpenStudy (klimenkov):

Yes, you are right. Did you use the triangle inequality?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Which side of triangle ABC is the longest? a None b c

OpenStudy (anonymous):

my answer is b

OpenStudy (klimenkov):

What theorem did you use?

OpenStudy (anonymous):

i cant remember the name but i look at the sides and angle. but my answer is not none is b

OpenStudy (klimenkov):

Do you know the Law of Sines?

OpenStudy (anonymous):

no never heard of them

OpenStudy (klimenkov):

http://en.wikipedia.org/wiki/Law_of_sines use it

OpenStudy (anonymous):

Which is a possible value for x? 12 13 14 15 my answer is 13

OpenStudy (klimenkov):

Why? I think it is not a parallelogram.

OpenStudy (phi):

the side opposite the smallest angle is the shortest side ditto for the largest angle, longest side

OpenStudy (anonymous):

it is because if you take the line in the middle you woul have the parallel figure

OpenStudy (phi):

for your ABCD figure, notice that the right side 16 is longer than the left side 13 the top equal the bottom (hash mark shows this)

OpenStudy (phi):

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