A student bikes to school by traveling first dN = 1.10 miles north, then dW = 0.400 miles west, and finally dS = 0.100 miles south. Take the north direction as the positive y direction and east as positive x. The origin is still where the student starts biking. Let dNdNd_vec_N be the displacement vector corresponding to the first leg of the student's trip. Express dNdNd_vec_N in component form.