Given the following data 40,50,55,78,58,60 calculate a/mode b/geometric mean c/harmonic mean

Find the domain and range of the following function f(x) = 51x - 21+ 4

Polygon abcd is a parallelogram, and m? abc = 127°. the length of is 10 units, and the length of is 5 units. the perimeter of the parallelogram is units, and m? bcd is °

Geometry ! complete the following proof. given: qk=16, pk=26, mk=65, kl=40 prove: ∆qpk~∆lmk