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An=-98+(n-1)(-10) find a78
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An=-98+(n-1)(-10) find a78

User Christopher Hunt
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1 Answer

5 votes

we have the expression

an=-98+(n-1)(-10)

find a78​

so

For n=78

substitute in the expression

a78=98+(78-1)(-10)

a78=98+(77)(-10)

a78=98-770

a78=-672

User Polmonite
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3.7k points
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