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Mathematics 20 Online
OpenStudy (anonymous):

The legs of an isosceles triangle have lengths of 2x+4 and -x+16. The base has a length of 3x+2. What is the length of the base? a.14 c.12 b.4 d.cannot be determined

OpenStudy (anonymous):

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OpenStudy (anonymous):

2x+4=-x+16 would it be like this?

ganeshie8 (ganeshie8):

yup ! legs are congruent

ganeshie8 (ganeshie8):

keep going

OpenStudy (anonymous):

but what do you do after that?

OpenStudy (anonymous):

ohhhh, solve for x. nvm. thx! x=4

ganeshie8 (ganeshie8):

but we're not after x

OpenStudy (anonymous):

oh?

ganeshie8 (ganeshie8):

|dw:1379285702960:dw|

ganeshie8 (ganeshie8):

question is asking us to find base length

ganeshie8 (ganeshie8):

|dw:1379285761666:dw|

OpenStudy (anonymous):

3x+2=4x then solve for x?

OpenStudy (anonymous):

i got x=2 so i must be wrong. :/

ganeshie8 (ganeshie8):

you've already solved x = 4

OpenStudy (anonymous):

yep

ganeshie8 (ganeshie8):

since base = 3x+2, to find its length measure, simply plugin x = 4 base = 3(4) + 2

ganeshie8 (ganeshie8):

simpliofy

OpenStudy (anonymous):

14

OpenStudy (anonymous):

dang that was my first answer that i got!

OpenStudy (anonymous):

:/

ganeshie8 (ganeshie8):

shud trust ur instincts :)

OpenStudy (anonymous):

haha.......Nope. (-: my insticts are usually wrong!

OpenStudy (anonymous):

ty!

ganeshie8 (ganeshie8):

they get better over time ... :) yw !

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