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love history [14]
3 years ago
8

How do you do this algebra question

Mathematics
1 answer:
jeka57 [31]3 years ago
3 0
C. Look:\\
Let's\ substitute\ 1.2.3\ or\ 4\ for\ n:\\
stage\ 1:\frac{n}{2}(n+1)=\frac{1}{2}(1+1)=1=1 square\\
stage\ 4:\frac{4}{2}(4+1)=2*5=10=10\ squares\\
Count\ it\ in\ the\ picture\ and\ compare
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