Which fraction can be replaced with 1/2 when estimating with fractions? a 10/12 b 7/16 c 2/9 d 1/8

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =