Question 4 5 pts
Saudi Arabia had a reported 381.5 billion dollars' worth of exports in 2012. Which of
the following correctly represents this in Scientific Notation?
O 381.5 x 10°
3.815 x 1013
O 3.815 x 10°
3.815 x 1011

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set

i can

step-by-step explanation:

i got 86 for this

hope this !

if you need an explanation just ask