Liar. This is only worth 5 points!!!!!!!!!!!!!!!!!!!!
A(t)=A0*(1/2)^(t/30)
where t=elapsed years
A0=initial mass at t=0.
Look at the picture.
Angle a:
Vertical angles are equal
Angle b:
(ΔABC). In a triangle, the three interior angles always add to 180°
Angle c:
<span>Angles on one side of a straight line will always add to 180 degrees. </span>
If you are asking what is 1/4 of 12, it would be 3.
Rotation 90° translates (x, y) to (-y, x). Thus (3, 2) gets translated to (-2, 3). Your green box gets filled with -2.