The fifth term of an arithmetic progression is 5 and the sum of the first six terms is 12. Find the sum of all the terms from the seventh term to the twelfth term.​

87

Step-by-step explanation:

Let a be the first term of the A. P. and d be the common difference.

ATQ, 5a+10d=5 and 6a+15d=12, a=-3 and d=2

Sum of terms from 7th term to 12th term is (a+6d)+(a+7d)+(a+11d)=5a+51d=87

step-by-step explanation:

1. the cylinder is a. 54

2.   a.108 /

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.