The slope is either 5/2 or 2/5 and the y intercept is 3
13
−
3
+
2
i
Multiply by
−
3
−
2
i
−
3
−
2
i
to make the denominator of
13
−
3
+
2
i
real.
13
−
3
+
2
i
−
3
−
2
i
−
3
−
2
i
Combine.
13
(
−
3
−
2
i
)
(
−
3
+
2
i
)
(
−
3
−
2
i
)
Expand
(
−
3
+
2
i
)
(
−
3
−
2
i
)
using the FOIL Method.
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13
(
−
3
−
2
i
)
−
3
⋅
−
3
−
3
(
−
2
i
)
+
2
i
⋅
−
3
+
2
i
(
−
2
i
)
Simplify.
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13
(
−
3
−
2
i
)
9
−
4
i
2
Simplify each term.
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13
(
−
3
−
2
i
)
9
+
4
Reduce the expression by cancelling the common factors.
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−
3
−
2
i
First you write down all even integers that divide 20.
Those are: 2,4,10,20
Since the request is that integer is less than n, 20 cannot be the answer.
This means that greatest even integer is 10
Answer is 10.
The tenths place digit is the digit right after the decimal point.
So in 264.5, the tenth digit is 5.