Expand this expretion -(8+5u) 1/3(12v+15 simplify {10k^2/k 2 times r times s times 8

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

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate