What is the area of the following circle?
2 answers:
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<h3>Answer: 5</h3>
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Explanation:
Apply the difference of squares rule
x^2 - y^2 = (x-y)(x+y)
x^2 - y^2 = (5)(1)
x^2 - y^2 = 5
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Alternatively, you can solve the system
for x and y to get (x,y) = (3,-2).
Then compute x^2-y^2 = 3^2-(-2)^2 = 9-4 = 5
Answer:
It wil take approximately 20 years 7 months and 29 days for the account to go from $45 to $150, or 21 years rounded to the nearest year.
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