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2 years ago

The sixth term of a sequence is 5. The tenth term is 7.

Mathematics

2 answers:

ruslelena [56]2 years ago

5 0

B term= 2x position number -7

worty [1.4K]2 years ago

3 0

<h3>Check the possibilities:</h3><h2>A:</h2>

u(n)=n-1

u(6)=6-1= True

u(10)=10-1≠7 False

<h3>A is eliminated.</h3>

u(n)=2n-7

u(6)=2(6)-7=12-7=5 True

u(10)=2(10)-7=20-7≠7 False

<h3>B is eliminated.</h3>

u(n)=0.5n+2

u(6)=0.5(6)+2=3+2=5 True

u(10)=0.5(10)+2=5+2=7 True

<h2>C is your answer.</h2>

<h3>Check D although we know it's C:</h3>

u(n)=n/6 +4

u(6)=6/6 +4=1+4=5 True

u(10)=10/6 +4=2.5+4=6.5≠7 False

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