3 of 8 The mean length of 10 childrens' big finger is 6.8cm.
The mean length of 7 adults big finger is 12.8cm.
What is the mean length (rounded to 2 DP) of these 17 people's big finger?​

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Human body temperatures have a mean of 98.20° f and a standard deviation of 0.62°. sally's temperature can be described by z = 1.4. what is her temperature? round your answer to the nearest hundredth. 99.07°f 97.33°f 99.60°f 100.45°f

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).