Katie has equation 
and wants to solve it completing the perfect square. In order to do it, first rewrite 7 in right side:
Then note that 
so Katie has to add 
to both sides (because 
):
Answer: correct choice is C.
<span>common stock: 8000 cash: 8000 5600
2400 1000
2500
1100
-----------
10400 10200
+200
equip: 5600 notes recv: 6100
revenue: 6100
2400
-------
8500
rent: 1000
wages: 2500
dividends: 1100
-------
4600
-------------------------------
8500
-4600
------
3900 - gross profits</span>
Answer:
Step 1 — Add up the common mass terms.
Step 2 — Convert masses to grams.
Step 3 — Convert volume measurements to masses (grams)
Step 4 — Find the total mass of the formula.
Step 5 — Figure out individual percentages.
Step 6 — Double check your figures.
Step-by-step explanation:
Step 1. Identify the unit you have
Step 2. Identify the unit you want to covert to
Step 3. Count the number of units between them
(<span>If </span>you<span> are going from a larger </span>unit<span> to a smaller </span>unit<span>, </span>you<span> multiply by 10 successively.)</span>
It would be equal to (1/6)^20
