Okay so im taking this online math class and i dont know how to do these so can someone help me please.......

2 answers:

7 0

1)
A sequence is arithmetic if the difference between consecutive terms is constant.

$1,2,3,4,... \\
2-1=3-2=4-3=1 \\
\hbox{arithmetic} \\ \\
2,4,6,8,... \\
4-2=6-4=8-6=2 \\
\hbox{arithmetic} \\ \\
0,-2,-4,-6,... \\
-2-0=-4-(-2)=-6-(-4)=-2 \\
\hbox{arithmetic} \\ \\
1,4,9,16,... \\
4-1=3 \not= 9-4=5 \not= 16-9=7 \\
\hbox{not arithmetic}$

1, 4, 9, 16, ... is not an arithmetic sequence.

2)
$a_2=1 \\
d=-3 \\ \\
a_5=a_2+3d \\
a_5=1+3 \times (-3) \\
a_5=1-9 \\
a_5=-8$

The fifth term is -8.

aleksley [76]3 years ago

3 0

Answer:

the answer for 1: is D:1,4,9,16

the answer for 2: is B:-8

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answer

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<h2>Explanation:</h2><h2></h2>

Hello! Remember you have to write complete questions in order to get good and exact answers. Here you forgot to write the relation so I could help you providing my own relation.

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