what number must you add to complete the square? x^2+6x=13 A.(x+3)^2=22 B.(x+3)^2=4 (x+9)^2=22 (x+9)^2=4

Will give brainliest sum of arithmetic series (sigma notation) find the numerical answer to the summation given below. (image shown below)

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.