)the terms 4, t, 9 are the start of a sequence.
part a: if the sequence is arithmetic, what is the value of t?
part b: if the sequence is geometric, what is the value of t?

see explanation

Step-by-step explanation:

A

If the sequence is arithmetic then the common difference d is

d = t - 4 = 9 -t, that is

t - 4 = 9 - t ( add t to both sides )

2t - 4 = 9 ( add 4 to both sides )

2t = 13 ( divide both sides by 2 )

t = = 6

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B

If the sequence is geometric then the common ratio r is

r = = ( cross- multiply )

t² = 36 ( take the square root of both sides )

t = = 6

could you reply to this with the question so i can ?

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation: