A certain star is 2.7 x 10 to the power of 2 light years from the Earth. One light year is about 5.9 x 10 to the power of 12 miles. How far from the earth​ (in miles) is the​ star?

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

Pls! does anybody know a shortcut for answering these types of questions in the future?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?