There are about 31,500,000 seconds in a year ? Choose the best approximation of the number of seconds in a year

A) 3x10^6
B) 3x10^7

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)

explanation:

step-by-step explanation:

step-by-step explanation:

(3rd option) - c

you need to rotate this triangle about the origin 270 degrees clockwise to create the full square.