Amanda measures the top of an 80cm desk to be 82.4. dwayne measures the height of a 140cm cabinet to be 137.2 cm. which student has a greater percent error

1. are the triangles similar and if so why? what is the value of x? show your work.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms