Answer:

Step-by-step explanation:
You can use these Cramer's formulas to solve for x and y:

where

So,



The total weight of the other five items are 10.444 kg
<em>(round as you wish)</em>
Answer:
6.861
Step-by-step explanation:
Answer:
√13
Step-by-step explanation:
1/33 is a fraction, meaning it is rational
1.6... has a repiton, meaning it is rational
-5.43 is a integer meaning it is rational