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OpenStudy (anonymous):
this
OpenStudy (anonymous):
and this one
OpenStudy (anonymous):
but umm can you write it out again?
OpenStudy (worlddomination):
3x-21
OpenStudy (worlddomination):
is for which length
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OpenStudy (worlddomination):
yes your right
OpenStudy (anonymous):
oh im sorry, i read the question wrong, that is not right.
OpenStudy (worlddomination):
me too which number are we talking abt.
OpenStudy (anonymous):
youre finding the perimeter of the road around the shape|dw:1427815528845:dw|
OpenStudy (anonymous):
so 16+16 +12+12?
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OpenStudy (anonymous):
thats right :)
OpenStudy (anonymous):
yay!
OpenStudy (anonymous):
what about 9 and 10 and 5?
OpenStudy (worlddomination):
your smart now lets go on the next question
OpenStudy (worlddomination):
lets do 5
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OpenStudy (anonymous):
#10 next, do you know what the formula for volume of a prism is?
OpenStudy (anonymous):
no i don't
OpenStudy (anonymous):
see if this helps
OpenStudy (anonymous):
i got v=4263 but i doubt thats right
OpenStudy (anonymous):
no its not quite but good try :) because it is oblique you can do it as two triangles so you take (.5*14*10.5*35)+(.5*14*10.5*29), and thats your answer
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OpenStudy (worlddomination):
gotta go bye
OpenStudy (anonymous):
4704?
OpenStudy (anonymous):
correct! good job!
OpenStudy (worlddomination):
you are tooo smart @sydneyarnea
OpenStudy (anonymous):
for #9 The other sides of the triangle can be solved using trigonometry, sine, cosine, and tangent
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OpenStudy (anonymous):
BC=7/cos(30), BA=7/tan(60), then the absolute values of sin(60), cos(60), and tan(60) can be solved by reverse solving the equations for those values