Can someone give me please the work for this so i can turn it in for full credit? Thank you.

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. solve this quadratic equation using the quadratic formula. 2x2 - 2x=1 need asap

We just started the introduction into circles and i have no idea how to do this.