B(n)=1 (-2)^n-1
What is the 4th term in the sequence

The 4th term is -8.

Step-by-step explanation:

This is an explicit formula.

All we have to do is plug n=4 in the formula to find the 4th term.

b(4)=1(−2)^(4−1)

=−8

The 4th term is -8.

29 mil

step-by-step explanation:

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: