10*2/5= 20/5 = 4 = 4.0 where 4 is the unit.(whole number)
Here we're discussing the "nth partial sum of a geom series."
1 - r^n
The formula for that is s(n) = a(1) ---------------
1-r
We can subst. the given values and see where that takes us:
1 - (-2)^6 1 - 64
105 = a(1)*---------------- = ----------*a(1) = -21*a(1)
1-(-2) 3
105
Solving this for a(1): a(1) = --------- = -5 (answer)
-21
Answer:
C-f(x)=1.5x
just took the quiz and 3/2 reduces to 1.5
Answer:
2.4 each friend have to buy packet of cookies
