Constanta The quantities I and y are proportional,
y

5.8 5.8
7.5 7.5
11.211.2

Find the constant of proportionality (r) in the equation y = r2.

c is the final : )

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)