Sam is a responsible citizen and files his annual tax returns judiciously. what should he do with tax return documents that are more than three years old? a) he should submit the documents to the local authorities b) he should keep the tax returns in a safety deposit and shred the supporting documents c) he should keep the documents with his attorney d) he should submit the documents to the irs for audit

D) he should submit the documents to the IRS For audit

There is a 3-year rule for annual tax returns. The purpose is to be prepared in case of an audit, otherwise, documents three years from the date they were filed can be shredded.

Sam being a responsible citizen can also submit the documents to the IRS For audit.

D

Explanation:

bd = 9 cm

step-by-step explanation:

in a 30°-60°-90° triangle, the ratio of side lengths is 1 : √3 : 2. that is, the longest side (hypotenuse) is twice the length of the shortest side.

all of the triangles in your geometry are 30°-60°-90° triangles. ac is the hypotenuse of δacd, and the short side of δabc.

the short side ad of δacd will be half the length of ac, so 3 cm. the hypotenuse ab of δabc will be twice the length of ac, so 12 cm. segment bd is the difference of the lengths ab and ad, so is

bd = ab -ad

bd = 12 cm - 3 cm = 9 cm

comment on side length ratios

you can figure the ratios of side lengths in a 30°-60°-90° triangle by considering the trig ratios of the angles. or you can figure the length of the altitude of an equilateral triangle of side length 2 using the pythagorean theorem.