Simplify the algerbaraic expression 3x(5x+4)+3x-(7-x)

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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

❤️ (geometry) does the construction demonstrate how to copy an angle correctly using technology a) yes; the distance between points a and f was used to create circle h b) yes; the distance between points f and g was used to create circle h c)no; the distance between points a and f was used to create circle h d) no; the distance between points f and g was used to create circle h