SOLUTION: Sabrina used a calculator and started adding the whole numbers in order:
1+2+3+4+5+
What is the last number she would add that would get the sum on her calculator over 1,000?
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Question 775148: Sabrina used a calculator and started adding the whole numbers in order:
1+2+3+4+5+
What is the last number she would add that would get the sum on her calculator over 1,000?
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
the formula is
+...+=
So we have an inequality because is given the sum on her calculator is over .
........ solve for
...solve as equation using quadratic formula
solutions:
..we need only positive solution, since the sum has to be >
so, has to be first greater number which is
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