Answer:
The answer to your question is: AC = 20
Step-by-step explanation:
Data
AB = 2x - 4
BC = 4x
AC = 2x + 12
AC = ?
AB + BC = AC
2x - 4 + 4x = 2x + 12
6x - 4 = 2x + 12
6x - 2x = 12 + 4
4x = 16
x = 16/4
x = 4
AB = 2(4) - 4 = 8 - 4 = 4
BC = 4(4) = 16
AC = 2(4) + 12 = 8 + 12 = 20
4 + 16 = 20
20 = 20
Answer:
15%
Step-by-step explanation: maybe
Answer:
The sum of the first 880 terms in the sequence is 2,273,920.
Step-by-step explanation:
Arithmetic sequence:
The difference between consecutive terms is always the same, called common difference, and the nth term is given by:

In which d is the common difference.
Sum of the first n terms:
The sum of the first n terms of an arithmetic sequence is given by:

ai = ai-1 + 6
This means that 
In this question:
Sum of the first 800 terms, so 
First term is -53, so 
The 880th term is:

Sum

The sum of the first 880 terms in the sequence is 2,273,920.
1/3 if you have a positive and a negative, it will turn into a positive so 11/12-7/12