Subtracting a number is the same as adding its additive inverse. For which elevation do we need to find the additive inverse What is the additive inverse of that elevations

What is the number 321,000,000 in scientific notation? also what is the number? ?

In angle pqr find the measure of

Which option identifies how kevin should proceed in the following scenario? four years ago kevin designed an mp3 player for young children. now that technology has changed, he would like to update his design to ensure that it encompasses cutting-edge techniques. by creating a third-angle projection of his ideas by designing an isometric projection of his new ideas by referring to past designs and illustrations of his original model by conferring with engineers who have improved upon similar devices