Each box of party invitations cost $6 jenny bought three boxes of invitations she paid with a $20 bill complete the number sentences to find out to find how much change jenny got

jenny gets $2 in change because $6 times 3 is 18 and 20-18 is 2.  I hope this helps

Step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.