W-5=5
W= 5+5 (bringing -5 to the other side, it becomes +5)
At last, W=10.
<span>x2</span>+<span>y2</span>+6x+10y+9=<span>0
that is ur answer :)</span>
Answer:

Step-by-step explanation:
Given


Required
Find b
implies that:


Collect like terms


Step one: Subtract $15 - $5.50 = $9.50
<span>Step two: divide $9.50 ÷ $15 = .633 (rounded) </span>
<span>Step three: Multiply .633 * 100 to change it to a percent. It becomes 63.3% (rounded) </span>
<span>The decrease is 63.33% </span>
<span>Proof: $15 * .63333 = $9.50 </span>
<span>Subtract $15 - $9.50 = $5.50
does this help??</span>