Using the following intervals for the scores on a 30-point quiz, which interval has the least frequency? Scores: 21, 27, 20, 29, 23, 21, 21, 27, 26, 25

Intervals: 19–21, 22–24, 25–27, and 28–30

Can someone me and plz do the problem

Acircle has a circumference of 28.36 units what is the diameter of the circle

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given