Where are the following numbers to refer to?
Answer: 0.65
Step-by-step explanation:
Let A denote that moviegoers were female and B denotes that moviegoers were under age 25.
As per given we have,
P(A)=0.56 P(B)=0.26 P(A∩B)=0.17
Using formula ,
Hence, the probability that a moviegoer is either female or under age 25 = 0.65
Let the number of chemistry books be x and the number of calculus books be y
total number of books in each case is:
x+y=24
x=24-y.....i
Weight of each case:
2707.2/20
=135.36
thus
4.2x+6.0y=135.36..ii substituting i in ii
4.2(24-y)+6y=135.36
100.8-4.2y+6y=135.36
hence
1.8y=34.56
y=19.2
hence
x=24-19.2
x=4.8
thus the number of chemistry books was 4.8*20=96 number of calculus was
19.2*20
=384 books
Answer:
2500 people PER square mile
Step-by-step explanation:
THe population density is the population per unit area.
Here,
Given:
Population = 400,000
Total Area = 160 sq. miles
To get population density, we would need the population PER UNIT AREA, per miles.
We can get that by dividing the total population by total area:
400,000/160 = <u>2500 people PER square mile</u>
This is the population density.
$27.64×3 =82.92
answer=$82.92
