Which of the following is a secant?

The secant in the following figure is line:

                               EF

Step-by-step explanation:

Secant--

A secant is a line that cut the curve at atleast(minimum) two(distinct) points.

Clearly from the figure we could see that:

              AC is a diameter of the circle.

Hence, the answer is:

                           Line EF.

(Since it cut the curve and two point and also extend infinitely in both the directions )

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116