Question

Circle D is below.

What is the arc measure of BAC in degrees?

(7n+12)

(13n-16)

(6n)

Answer 1

`BAC = 276`

Explanation:

Given

See attachment

Required

Find BAC

The sum of
`angles\ at\ a\ point` is 360.

So:

`7n + 12 + 13n - 16 + 6n = 360`

Collect like terms

`7n + 13n + 6n = 360 + 16 - 12`

`26n = 364`

Solve for n

`n = 364/26`

`n = 14`

From the circle:

`BAC = 7n + 12 + 13n - 16`

Substitute 14 for n

`BAC = 7*14 + 12 + 13*14 - 16`

`BAC = 276`