Answer:
a) 1790 b) 1.79
Step-by-step explanation:
a) you just add to get the perimiter 2(900) + 2(400) to get 1790
b) 1000 meters makes a kilometer so we divide by 1000 and get 1.79 for the kilometers
Answer:
dont know sorry i wish i could help you use the internet
Step-by-step explanation:
It will be 3 cause 3 cubed is 27
Answer:
see explanation
Step-by-step explanation:
The n th term of a geometric sequence is
= a![(r)^{n-1}](https://tex.z-dn.net/?f=%28r%29%5E%7Bn-1%7D)
where a is the first term and r the common ratio
Given
=
and r =
, then
a
=
, that is
= ![\frac{1}{32}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B32%7D)
=
( cross- multiply )
32a = 2048 ( divide both sides by 32 )
a = 64 ← first term
Thus the explicit formula is
= 64 ![(\frac{1}{2}) ^{n-1}](https://tex.z-dn.net/?f=%28%5Cfrac%7B1%7D%7B2%7D%29%20%5E%7Bn-1%7D)