2. How does finding the area of one face of a triangular pyramid
that is made up of equilateral triangles help
you find the surface area of the triangular
pyramid?

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

Need plz been trying to do it for a long time and still haven’t succeeded

Determine which solution is correct for solving 5/7y=6 reciprocals.