What is the measure of arc BC

Option B

Step-by-step explanation:

As property of angle inside circle, arc BC = 2 x angle BDC.

Let's consider triangle ABD.

BAD = 98 deg  

ABD = (1/2) x arc AD = (1/2) x 80 = 40 deg

As the property of sum of 3 angles in a triangle,

=> ADB + ABD + BAD = 180

=> ADB = 180 - ABD - BAD = 180 - 40 - 98 = 42 deg

=> BDC = 70 - 42 = 28

=> arc BC = 2 x 28 = 56 deg

=> Option B is correct

3 ft

step-by-step explanation:

since the triangle is right use pythagoras' identity to solve for a

the square on the hypotenuse is equal to the sum of the squares on the other two sides, that is

a² + 8² = ( )²

a² + 64 = 73 ( subtract 64 from both sides )

a² = 9 ( take the square root of both sides )

a = = 3

step-by-step explanation:

10.50 + taxes which added up to 11.50