Let a and b be subsets of a universal set u and suppose n(u)=400, n(a)=135, n(b)=80, and n(a n b)=60. find the number of elements in the set n(ac n bc)

Write the equation below the represents the line passing through the point (-3, -1) negative one with a slope of 4

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by