If a1= 8 and an=an-1-3 then find the value of a5?
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40?

Step-by-step explanation:

a 1 =5

a 5 = 15

The  

n

t

h

term is denoted as:

a

n

=

a

1

+

(

n

−

1

)

d

So,

a

5

=

a

1

+

(

5

−

1

)

⋅

d

15

=

5

+

4

d

15

−

5

=

4

d

10

=

4

d

d

=

10

4

d

=

5

2

So the formula for  

term can now be written as:

a n = a 1 + ( n − 1 )d

a n = 5 + ( n − 1 ) ⋅ 5 2

Step-by-step explanation:

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.