Decide whether each of these statements is true or false. The diameter of a circle must pass
through the centre of the circle.
The radius of a circle is the distance
from one side of the circle to the other.
The radius of a circle is always exactly
half the length of its diameter.
The diameter of a circle is the distance
between any two points on its circumference.

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !

Find the distance between (7,-6) and (-3,-9)

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.