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Mathematics 15 Online
OpenStudy (anonymous):

these are the questions @jeweaver6895

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

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?

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

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

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

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

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