Bob has saved $25.40.rena has saved 3/4 the amount that bob saved. nick saved twice as much as rena. how much is the total saved of all here?

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

Which one ? is the answer and how to find this answer

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)