Answer:
4 + 12 + 36 + ...
Step-by-step explanation:
4, 12, 36, ... is a geometric sequence, it has a common ratio of ![r=\frac{36}{12}=\frac{12}{4}=3](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B36%7D%7B12%7D%3D%5Cfrac%7B12%7D%7B4%7D%3D3)
When we add the terms of a geometric sequence we get a geometric series.
4+12+36+ ... is a geometric series, it has a common ratio of ![r=\frac{36}{12}=\frac{12}{4}=3](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B36%7D%7B12%7D%3D%5Cfrac%7B12%7D%7B4%7D%3D3)
4 + 12 + 20 + ... is not a geometric series because it has no common ratio
![\frac{20}{12}\ne \frac{12}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B20%7D%7B12%7D%5Cne%20%5Cfrac%7B12%7D%7B4%7D)
The second choice is correct
This isnt enough information
Answer: 500 pieces of wheat
Explanation:
First: set up the proportion
Cookies:wheat = 8:2
Simplify = 4:1
We need to find how much wheat he needs for 2,000 cookies.
We need to assign a variable for wheat
Wheat = W
If Josh needs to make 2,000 cookies he would need W amount of wheat
Original proportion = 4:1
For 2,000 cookies = 2,000:W
To get from 4 to 2,000
2,000/4 = 500
So W/1 = 500
Isolate the variable:
w/1 (1) = 500/1
W = 500
Answer:
The Answer is C
Step-by-step explanation:
This applies to your exam.