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Mathematics
Mathematics
Problem
Determine the value of
k
k
k
for which the system
4
x
+
5
y
=
9
4x + 5y = 9
4
x
+
5
y
=
9
and
8
x
+
k
y
=
20
8x + ky = 20
8
x
+
k
y
=
20
has no solution.
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