Evaluate the expression for x=5, y=3,and z=1/4. 5x−6y+20z/4yz

Nick estimated that 5/8+4/7 is about 2.explain how you know his estimate is not reasonable plz and fast i will give 50 points

Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa

5x−4≥12 or 12x+5≤−4 can you with this problem