Answer:
3
Step-by-step explanation:
the calculator I used
http://www.alcula.com/calculators/statistics/standard-deviation/
Answer:
19
Step-by-step explanation:
You take 80% of 24. and do 24 x 80. Round to the nearest whole number.
Answer: 46°
Step-by-step explanation:
90 - 44 = 46
Answer:
40.5 seconds if it is 1:21 minutes
Step-by-step explanation:
60 seconds per minute plus 21 seconds is 81 seconds. Half of 80 is 40, half of 1 is 0.5. Together it is 40.5 seconds for half of 1:21 minutes.