The line of symmetry of the parabola whose equation is y = ax2 - 4x + 3 is x = -2. what is the value of "a"?

Which of the following is the correct ratio for converting kilograms to grams

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.