Let E be the midpoint of OA and F be the midpoint of OB.
If point O is placed between A and B, then points E and F are placed <span>on different sides from O. The segment OE has length 12÷2=6 cm and segment OF has length 9÷2=4.5 cm. Than EF=6+4.5=10.5 cm.
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If
point O is placed outside the segment AB, then point B is closer to
point O than point A, because OA>OB. Since OE=6 cm and OF=4.5 cm,
EF=6-4.5=1.5 cm.
Anyway
so the recursive rule tells the relationship between the previous term and the term we want to find
given
an=2n+11
it is clear that the first term is 13
2nd term is 15
3rd term is 17
each term increases by 2
so
a term is equal to the previous term plus 2
an=a(n-1)+2
the first one is the answer
Answer:
b
Step-by-step explanation:
Answer:
B
Step-by-step explanation: