Suppose that ca = 12, cb = 20, df = 6, and fe = 10. which additional fact would guarantee that the triangles are similar? a) ab = 24 and de = 12 b) ab = 30 and de = 18 c) ab = 12 and de = 24 d) m∠a = m∠d e) m∠b = m∠e

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)

college

c

step-by-step explanation: