If the domain of the square root function f(x) is x < 7, which statement must be true?
7 is subtracted from the x-terim inside the radical.
the radical is multiplied by a negative number.
7 is added to the radical term.
the x-term inside the radical has a negative coefficient.

sine

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.

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

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