44 students completed some homework and the histogram shows information about the times taken. Work out an estimate of the interquartile range. In your working you must show the lower and upper quartiles

19 mins

Step-by-step explanation:

1.4 × 5 = 7

0.8 × 10 = 8

1.4 × 10 = 14

1 × 15 = 15

15 + 14 + 8 + 7 = 44

44 / 4 = 11

Lower Quartile of 44 = 11

Lower Quartile = 10 minutes

11 × 3 = 33

Upper Quartile = 29 minutes

The Range is 19 minutes

angle addition postulate

2x=56

step-by-step explanation:

step-by-step explanation: 4 cause 2+2=4