I need help with Geometry

73 degrees

Explanation:

if the degrees in a pentagon add up to 540 then you subtract all the angles you have right now and you get 107 and since it's on a straight line you do 180 - 107 to get you 73

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.

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a