Find the common difference for the sequence shown.
56, 49, 42, 35,
-12
-7
7

The common difference is -7.

Step-by-step explanation:

Given sequence,

56, 49, 42, 35,

Which is an Arithmetic sequence ( because consecutive terms are in same difference ),

Since, the difference between the consecutive term is called the common difference,

Thus, common difference,

d = 49 - 56 = 42 - 49 = 35 - 42 = -7

answer: b.48 for

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)