Answer:
8.67
Step-by-step explanation:
-9t+18= -60
60+18=9t
78=9t
t= 78/9
=8.66
This is the concept of statistics, given that there are 650 students and all of them read a total of 18,996 pages. We are required to get the average number of pages that they all read;
Average, otherwise known as the mean is the calculated 'central' value of a set of numbers;
The formula for mean is given by;
mean=(sum)/(count)
in our case:
sum=18,996
count=650
thus;
mean=18996/650
=29.23
Here we can conclude that the average number of pages read by each student in the High School was 29.23
Answer:
The total cost of the party (C), can be expressed as;
C=10 n+30, where n is the number of children
Step-by-step explanation:
Step 1
We can use the expression below to calculate the total cost of the party as shown;
C=F+(V×n)
where;
C=total cost of the party
F=fixed cost to design party
V=cost per child
n=number of children at the party
In our case;
F=$30
V=$10
n=n
replacing;
C=30+(10×n)
C=30+10 n
The total cost of the party (C), can be expressed as;
C=10 n+30, where n is the number of children
Answer: Our required probability is 47.3%.
Step-by-step explanation:
Since we have given that
Probability of schools or district in a country use digital content = 86% = 0.86
Probability of schools or district uses digital content as a part of their curriculum out of 86% =
So, Probability that a selected school or district uses digital content and uses it as a part of their curriculum is given by
Hence, our required probability is 47.3%.
Answer:
90 degrees, 120 degrees and 150 degrees
Step-by-step explanation:
Given that three adjacent angles are at a point. The ratio of the measurements is 3:4:5. The angles should add to 360.
First add up all the ratio
3 + 4 + 5 = 12
For ratio 3
3/12 × 360 = 90 degree
For ratio 4
4/12 × 360 = 120 degree
For ratio 5
5/12 × 360 = 150 degree
90 + 120 + 150 = 360 degree.
The angles are therefore, 90 degrees, 120 degrees and 150 degrees