I believe it's mean absolute deviation
Step-by-step explanation:
Answer:
24 or 2.5
Step-by-step explanation:
I'm not sure if it was the median of the inches or responses so if it was inches its 24 and if it's the 3 2 1 3 its 2.5
15. 55x + 125
14. .90x + 2.50
speed of current is 1.5 mi/hr
Answer:
let the rate in still water be x and rate of the current be y.
speed down the river is:
speed=distance/time
speed=14/2=7 mi/h
speed up the river is:
speed=(14)/(3.5)=4 mi/hr
thus total speed downstream and upstream will be:
x+y=7...i
x-y=4.......ii
adding the above equations i and ii we get:
2x=11
x=5.5 mi/hr
thus
y=5-5.5=1.5 mi/r
thus the speed in still waters is 5.5 mi/hr
speed of current is 1.5 mi/hr
