The circumference of a circle is 8π cm. what is the diameter of the circle?
a) 2 cm
b) 4 cm
c) 6 cm
d) 8 cm

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?

Type the correct answer in each box. use numerals instead of words. the average number of subscribers to an online magazine each year from 2010 to 2015 is given in the table below. the average number of subscribers to the online magazine in 2010 was the percent increase in the average number of subscribers in 2011 to the average number of subscribers in 2012 was %. the maximum average number of subscribers to the online magazine in the years shown was