A(n)=-1(-3^n)
3, -9, 27, -81
Answer:
zknj;zhb
Step-by-step explanation:
zJ NKml
Answer:
mean= sum of the terms/ (over) number of terms
Answer:
<h2>
4.5</h2>
Step-by-step explanation:


Move constant to R.H.S and change its sign

Subtract the numbers

Divide both sides of the equation by 2

Calculate

Hope this helps..
Best regards!!