The sum of two numbers is 12. The first number, x, is twice the second number, y. Which system of equations could be used to find the two numbers? A system of equations. x plus y equals 12. x equals 2 plus y. A system of equations. x plus y equals 12. x equals 2 y. A system of equations. x y equals 12. x equals 2 plus y. A system of equations. x y equals 12. x equals 2 y.

125 yards

step-by-step explanation:

i take 75 plus 50.

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.  

if your equation is in the form ax2 + bx + c, you can find the maximum by using the equation:

max = c - (b2 / 4a).

the first step is to determine whether your equation gives a maximum or minimum.

-x2 + 4x - 2.     thats an example hope it