Can someone help me with 4 and 7

Anonymous
timer Asked: Sep 18th, 2014
account_balance_wallet $5

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Tutor Answer

Elizabeth V
School: Boston College

4. 

First off set AC+CD=AD

6x-3+4x-3= 8x=14

10x-6 = 8x +14

2x=20

x=10 

If you plug 10 as (x) back in the statement is true. 

6(10)-3= 57=AC 

7. 

C is the answer 



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Anonymous
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