1.

This is an arethmetic progression sum. in grade 10. Q 2 b

Answer»

Here is the answer
a1=k-3
d1=2k+1-(k-3)
d1=2k+1-k+3
d1=k+4.......(i)
a2=2k+1
d2=4k+3-(2k+1)
d2=4k+3-2k-1
d2=2k+2......(ii)
from eq (i)&(ii)
k+4=2k+2
4-2=2k-k
2=k
or
k=2
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