Answer:
mean of other sixteen numbers is 40
Step-by-step explanation:
let the total of 20 numbers be x
x/20 = 42
20×x/20 =42×20
x=840
let the total of four numbers be y
y/4=50
4×y/4 = 50×4
y=200
so as to get the difference of x - y
=840-200
=640
the average of sixteen numbers
=640/16
=40
therefore the mean of sixteen numbers is 40
Answer:
The volume of the cylinder in feet is
V= 9.43ft³
Step-by-step explanation:
Step one
The formula for the volume of a cylinder is given as
V=πr²h
Where r= radius
h= height
Step two
Given Data
Radius = 1foot
Height = 3 feet
Substituting in our formula we have
V=3.142*1²*3
V= 9.43ft³
Answer:
22.5
Step-by-step explanation:
y=kx
20=k15
k=1•33
30=1•33x
x=22•5