Find the 23rd term of the arithmetic sequence whose common difference is d=4 and whose first term is a1, =-10.​

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

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