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The ages of people signed up for piano lessons are listed. 11, 16, 15, 9, 19, 12, 13, 13, 11, 11, 18, 17 What is the mode of the ages? A. 12 B. 15 C. 13 D. 11

asked Jun 11, 2017

Mathematics
middle-school

2 answers

1 vote

31.9k views

a teacher had 21 red pens. if the ratio of red pens to blue pens owned was 3:1 how many pens did she have in total

asked Aug 13, 2016

Mathematics
middle-school

1 answer

3 votes

66.4k views

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