566,000,000
standard notation just means write the number out insted of in an equasion
Add like terms just like you would anywhere else...
Reflected over the x-axis:

<span>. Hence, the original triangle is described by A'B'C'.</span>
Answer:
80%
Step-by-step explanation:
To find percent decrease (new amount/original amount)*100
(500/625)*100
=80
--
to check
625*.80
=500
or
625*80%
=500
1/10
hope this helps u out!