Write the solution set of the equation x2 – 4=0 in roster form

5/6+7/8what is the answer sealsdbdbshd

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

Two cities a and b are 1400km apart and lie on the same n-s line. the latitude of city a is 23 degrees. what is the latitude of city b. the radius of the earth is approximately 6400km.