(-7) + b = -12
what is b?

it would be -5, because when they are the same signs, you keep the sign and add the numbers, so -7 +-5=-12

Step-by-step explanation:

kbmflmklbhml; bmlzb; bdhzz

step-by-step explanation:

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.