Apower of 10 with a positive exponent will produce a number that is

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil