50 centimeters increased by 132%.

Average salary for a medical assistant is $31,220 which is a 20% income tax bracket how much money would they pay in income tax?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

What is the result of adding the system of equations? 2x+y=4 3x-y=6