Dalton's dad rode his bike 1 kilometer north,1 kilometer west,1 kilometer south, and 2 kilometer east. how many total kilometers will dalton's dad ride if he follows this path 9 times?

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle