~I will give medal to the person who helps me ~
Given ABC find the values of x and y. In your final answer, include all of your calculations
(Picture will be below)

- anonymous

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- anonymous

##### 1 Attachment

- anonymous

|dw:1438643579023:dw|

- JoannaBlackwelder

Nice drawing. :-) Any ideas how to start?

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## More answers

- anonymous

well from the last person who tried to help totally confused me ~ but i asked my teacher to but she made my confusion worse this is what she said. Let CD = x-9 6/x = (x-9)/6 cross multiply 36 = x^2 - 9x x^2 - 9x - 36 When you factor this you will get 2 binomials. Set each equal to 0 and solve. Only the positive answer will work. Then set up another proportion with 9/y = y/answer for x

- JoannaBlackwelder

Hm, that could work. Let me show you how I would start it.

- anonymous

alright ~`

- JoannaBlackwelder

|dw:1438644079169:dw|
Pyth used 3 times on the 3 right triangles

- JoannaBlackwelder

Then I used substitution to simplify one equation to only one variable

- anonymous

wait what did you substitute ??

- JoannaBlackwelder

|dw:1438644230084:dw|

- JoannaBlackwelder

|dw:1438644298448:dw|

- JoannaBlackwelder

See how I did that?

- anonymous

pythagorean theorem right ?

- JoannaBlackwelder

3 times, then substituted to make one equation with only x

- anonymous

ohh yea ! I think I understand now but this is so different from what the other person tried to tell me.

- JoannaBlackwelder

Yeah, it is using formulas you already use in a more complex way, but you don't have to memorize a new formula. That's why I like it. :-)

- anonymous

this formula is the pythagorean one right ?

- anonymous

it has the times 2 on each number ~

- JoannaBlackwelder

|dw:1438644708961:dw| All three of these are Pythagorean

- JoannaBlackwelder

And those are squares, not times 2

- anonymous

ohhh ~ My dumb mistake ! hahaha ~

- JoannaBlackwelder

:-) No worries

- anonymous

but what type of equation type is this ? jw im a little rusty on my algebra stuff so I don't remember much

- JoannaBlackwelder

Quadratic

- anonymous

alright ~~ but i never used it for this

- JoannaBlackwelder

The formula your teacher gave you was quadratic

- anonymous

oh well Im sorry its just super hard with all these different equation types

- JoannaBlackwelder

No worries, I know it can be tricky to keep up with it all.

- anonymous

ill try my best, but what are we trying to find first the x or y?

- anonymous

the problem says find x and y

- JoannaBlackwelder

We are finding x first just because it worked out to be easier to solve for it first.

- anonymous

alright, so its \[6^{2}\]

- anonymous

the equation = to

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