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Mathematics 18 Online
OpenStudy (anonymous):

Please help!!!!! MEDAL AND FAN!!!!!

OpenStudy (anonymous):

This is the first picture

OpenStudy (anonymous):

This is the second

Vocaloid (vocaloid):

well, let's start off with the first problem (#17) the shape is a quadrilateral, so we know that all the angles add up to 360 x + x + 95 + 35 = 360 solve for x

OpenStudy (anonymous):

95+35= 130 360-130= 230

OpenStudy (anonymous):

\[230\div2=115\]

Vocaloid (vocaloid):

yup, so x = 115

Vocaloid (vocaloid):

ready for #18?

OpenStudy (anonymous):

Yup :)

Vocaloid (vocaloid):

well, this is a parallelogram, so we know that opposite sides are equal all we have to do is write 3x + 12 = 18 and solve for x

OpenStudy (anonymous):

Wait I know the answer.... 18 is 2

Vocaloid (vocaloid):

yup, x = 2

Vocaloid (vocaloid):

ready for #15?

OpenStudy (anonymous):

yes

Vocaloid (vocaloid):

well, again, this uses the same rule: opposite sides are equal so 3x - 2 = 25 solve for x

OpenStudy (anonymous):

x=9?

Vocaloid (vocaloid):

yup, ready for the last one?

OpenStudy (anonymous):

Yes. ^.^

Vocaloid (vocaloid):

this is a quadrilaterial, so we use the 360 rule again 3x + 2x + 44 + 86 = 360 x = ?

OpenStudy (anonymous):

Idk..... I'm struggling with this one

Vocaloid (vocaloid):

hm, ok, let's start by combining like terms 3x + 2x = ?

OpenStudy (anonymous):

3x+2x=5x 44+84=130

OpenStudy (anonymous):

360-130=230

Vocaloid (vocaloid):

good so far. right now we have 5x = 230 so x = ?

OpenStudy (anonymous):

230/5=46

OpenStudy (anonymous):

I think

Vocaloid (vocaloid):

yupp so x = 46 that's it

OpenStudy (anonymous):

Thanks for helping me. :-)

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