Write an expression equivalent to 6(x+y)-5 and state which property you used to write

Which math sentence can be used to determine if the triangle is a right triangle?

Ten times the square of a non-zero number is eqaul to ninety times the number

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. after tax the total is 45.99. what percentage of the subtotal is the total?