Andrew is searching for a cup and discovers that he has 20 plates for every 5 pairs of cups. if he has 40 plates, how many pairs of cups does he have?

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

Line wx is parallel to line yz. if m