I need to know how to use a algebra calulater

150% de 30 es cuanto

how do you not know its so easy

if you was gonna solve for a, a is a   < -12

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.