Is (3,2) a solution of the system of equations?Explain 2x+y=8 -x+3y=4
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£7200
In first year depreciates by 20%, that is it is worth 80% of it's original value
80% = = 0.8
value after 1 year = 0.8 × £10000 = £8000
In the second year it depreciates by 10% of it's value, that is it is worth 90% of it's value at the end of the first year.
90% = = 0.9
value after 2 years = 0.9 × £8000 = £7200
72°
the sum of the exterior angles of a polygon = 360°
for a pentagon with 5 sides the
exterior angle = = 72°