Answer:
0.01863, yes preference
Step-by-step explanation:
given that a class consists of 12 boys and 12 girls. The teacher picks five students to present their work to the rest of the class and says that the five students are being selected at random
Here selecting any 5 students from the group of total 24 students is combination because order does not matter.
Total no of ways of selecting any 5 from total 24 =
No of ways of selecting only 5 girls = No of ways of selecting random 5 girls from total 12 girls
=
a) the probability be that all five students
selected are girls=
b) Since the probability for selecting all girls is very small and near to 0, it is unusual to select all girls if done at random. Hence the teacher had a preference for girls.
Answer:
0.84 kg
Step-by-step explanation:
Given that :
Weight per liter = 1.12kg per liter
That is 1 Litre weighs 1.12 kilogram
The weight of saline solution of 0.75 Litre will be :
1 Litre = 1.12 kg
0.75 Litre = x
Cross multiply :
1 * x = 1.12 * 0.75
x = 0.84 kg
Hence, 0.75 Litre weighs 0.84 kg
Answer:
D
Step-by-step explanation:
Curtis's house: (-4,-6)
Jean's house: (-4,3)
Distance: -6 to 3 = 9 miles
Curtis travels = 12 miles per hour
speed = distance / time
12 miles/hr = 9 miles / time
12 miles/hr * time = 9 miles
time = 9 miles * 1hr/12 miles
time = 0.75 hour
1 hour = 60 minutes
60 minuts * 0.75 = 45 minutes
It would take 45 minutes for Curtis to ride from his house to Jean's house