△pqr has two known interior angles of 34°, and 80°. △rst has two known interior angles of 24°, and 90°. what can be determined about whether △pqr and △rst are similar? a. all interior angles must be given to determine similarity. b. the triangles are not similar. c similarity cannot be determined from the given information. d. the triangles are similar.

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)

yes. we do proportions in probabilities.