What is the measure of ac ? (first picture)
enter your answer in the box.
what is the measure of bc ? (second picture)
enter your answer in the box.

Part 1)

Part 2)

Step-by-step explanation:

Part 1) What is the measure of AC ?

we know that

The inscribed angle is half that of the arc it comprises.

so

substitute the values and solve for x

Find the measure of arc AC

Part 2) What is the measure of BC ?

we know that

The inscribed angle is half that of the arc it comprises.

so

substitute the values

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