A line has ______ rotational symmetry
2 answers:
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Answer:
<h2>48</h2>Step-by-step explanation:
It's an arithmetic sequence with common difference <em>d = 7</em>.
Find 9th term.
METHOD 1<em>.</em>
<em>Calculate next terms:</em>
METHOD 2.
<em>The explicit formula of an arithmetic sequence:</em>
Substitue:
<em>use the distributive property</em>
Put <em>n = 9</em>: