Which of the ratios below has a unit rate of 30? Select all that apply. A) 50:20 B) 4:140 C) 180:6 D) 240:8 E) 900:30

2. using calculations based on a perpetual inventory system, determine the inventory balance altira would report in its august 31, 2021, balance sheet and the cost of goods sold it would report in its august 2021 income statement using the average cost method. (round "average cost per unit" to 2 decimal places.)

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?

Bc and bd are opposite rays. all of the following are true except a)a,b,c,d are collinear b)a,b,c,d are coplanar c)bc=bd d)b is between c and d