The sidewalk is 5 feet wide, and the garden measures 20 feet across. Which measurement is closest to the circumference of the outer edge of the sidewalk?

What is the prime factorization of 23 ?me with this question

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4? r^2. write your answer in scientific notation.