What is the probability of rolling two dice and getting a sum of 4? Please explain.

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

Sketch one cycle if the cosine function y=2cos2theta

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73