Which of the following arguments shows why x−−√ may be rewritten in the form x1/2 ?

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?