Which two statements are true of mechanical waves? A. They transfer energy by disturbing electric and magnetic fields.
B. They use a medium to transfer energy.
O c. They travel by causing particles of matter to vibrate.
D. They do not need a medium to transfer energy.

chemical properties of thing

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .