3 years ago

SOMEONE PLEASE HELP

Mathematics

1 answer:

ASHA 777 [7]3 years ago

7 0

Answer:

Step-by-step explanation:

a1=12

an=an−1+4

the given sequence shows that :

the first term is a1=12

and the common difference ”r” is = 4

then the general term of the sequence is :

an=a1+(n-1)r

then

an=12+(n-1)4

then

an=4n+8

therefore

a7=4(7)+8

= 28+8

=36

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