There are 25 students performing in the holiday concert. Of the students, 10 are boys. What percent represents the portion of students in the holiday concert that are boys?

10/25=0.4

0.4= 40%

Step-by-step explanation:

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°